Thursday, 22 December 2022

How Finland Fights Fake News

It is difficult to combat fake news - with the approach of 2022 US midterm elections, there is a wave of false claims surrounding the vote. The crucial factor is the level of trust that the population has in authorities and the media.

Finland
Shortly after Vladimir Putin called up 300,000 military reservists in Sep. 2022, a video showing long queues of cars at the Finnish-Russian border started circulating on social media. This was quickly pointed out as fake by the Finnish Border Guard, who posted on Twitter that some of the videos were fake, having been filmed earlier. The tweet then made it to the top of the Ukraine live page on the website of national broadcaster Yle.

Finland is a high trust society, with the government trusted by 71% of the Finnish population. Parliament, the civil service, the police and the media all enjoy high levels of trust. The Open Society Institute annual study revealed that Finland ranks highest in a global chart measuring resilience to disinformation, while the UK ranks 8th and the US 10th. While Finns don't believe everything they read in the papers, and do look at social media for information, more of them are able to critically evaluate information.

As US midterm elections approach, fake news causes real-world consequence. Despite the increased focus (including efforts by the tech giants) on tackling false and misleading claims on social media, disinformation still gets through and people with social media accounts are still being pointed towards information that bolsters their starting viewpoints.

The Finnish solution
The Finnish school curriculum was revised in 2016 to teach children the skills they need to spot the fabricated information spread by social media. This is not taught as a separate subject but embedded into other subjects. Maths classes look at how statistics can be manipulated. An art project might be for children to create their own versions of a shampoo advertisement, that show that hair might not end up as shiny as promised on the bottle. In language classes they compare the same story written as fact-based text and as propaganda, while history lessons might compare war-time posters from Nazi Germany and the United States.

Finland's National Emergency Supply Agency
This is a comprehensive publicly-funded security model. The government works with private businesses and the media to build public resilience to threats and prepare people for all types of disruptions. Finland also has a number of NGOs (non-governmental organisations) and voluntary organisations working to combat fake news. The best known is probably fact-checking service Faktabaari.

Finland's experience is that proactive moderation in real-time can make a difference.

What can social media platforms do?
Since the Covid-19 pandemic, social media sites have all committed to doing more to fight against falsehoods. There has been some success in removing harmful content and labelling conspiracies with accurate information from independent fact-checkers.

But there are still posts that rack up likes and views before they are removed, and many that aren't identified. Some experts favour a pro-active moderation approach to tackle these posts before they spread. However, its harder to restore faith in institutions, especially when trust in them has been eroded by disinformation.

Source: BBC news item How Finland can help US fight fake news 13th October 2022

Sunday, 11 December 2022

Future of the NHS

The Beveridge Report, written during WW2, identified five issues that needed to be addressed: want, disease, ignorance, squalor and idleness. Beveridge argued that when peace came, much of the population would need help to live well, but this would require a double redistribution of income, through social insurance and by family needs.

2022 Everyone in the NHS is worried about what winter 22/23 will bring as the service is already struggling to perform even its central function - to deliver care safely and effectively.

The waiting list for non-urgent treatment is high, with nearly one in eight people in England currently waiting for care. The seriously ill face dangerously long waits. Heart attack and stroke victims wait three times as long as they should for ambulance crews to reach them. Every minute's delay reduces the chances of surviving a heart attack by 10%. Accident & Emergency departments are also struggling. Long waits to be seen are increasingly common; waiting 12 hours is at a record level. And if transfer to a ward is needed, there can be long waits for beds to become available. 

The difference between 1948 and 2022 is stark. Annual budget in 1948 was equivalent of around £15 billion today, while the NHS England 2022 budget is £129.7 billion and rising. In 1948 male life expectancy was 66 years and for women 70. In 2022 men can expect to live to just under 80 and women almost 83 years. The UK population was about 50 million in 1948, and is now just under 70 million. In 2019 the NHS dealt with more than a million patients every 36 hours, with over 17 million hospital admissions and about 96 million outpatient attendances.

There is no simple solution for problems that have been caused years ago; and the pandemic has merely exacerbated them. And it is true that there is no perfect healthcare system in the world - they all have advantages and disadvantages. 

The NHS is drastically short of staff. One in ten posts is currently vacant (the highest level since records began five years ago), which limits the ability of the NHS to expand services. Current staff are experiencing burn-out. One carer in three quit in 2020, the number of full-time GPs has fallen by more than 700 since 2019, with the majority now only working part-time. We need 12,000 more doctors, and more than 50,000 nurses and midwives. By 2030, the NHS is expected to need 475,000 more workers, plus another 490,000 carer jobs. Many other countries face shortages, but the UK has fewer doctors and nurses per head of population than many other western European nations.
 
The pandemic and its impact on healthcare provision has left a record 6.6 million people on NHS waiting lists - and the number is rising.

It takes time to train more staff. While the numbers entering training are now increasing, the NHS has been hampered by political decisions and limited action to boost the workforce. From the mid 2010's bursaries for nurse training were removed; the health secretary at the time, Jeremy Hunt, is on record as saying it was probably his biggest single mistake. 

Doctors. Between four and seven years depending on the course and other medical qualifications. Followed by a two year Foundation programme where you work for a limited period in each of a number of different branches of medicine. Next comes specialty training: three years for general practice, between five and eight for other specialties. Nurses. Depending on which route you take it is (a) three years for a university degree, (b) two years at university if your first degree was in a related subject, (c) Registered Nurse degree apprenticeships (RNDA) is a flexible part-time route while employed, taking between two and four years. Nursing associates can top up their qualifications to RN.

Every year both the General Medical Council and the Nursing and Midwifery Council deal with multiple cases involving healthcare professionals who falsify qualifications. Many other such abuses may never come to light. In recent years, authorities have shut down hundreds of bogus higher education institutions selling fake degrees, but while it is now more difficult to obtain false medical training certificates, very convincing qualifications can still be obtained on the dark net.

GPs. GPs are at the heart of the NHS but for the past twenty years their numbers have failed to keep pace with the UK's soaring population. As older doctors retire, younger doctors are less willing to step up as practice partners and preferring to become well-paid locum or salaried doctor.  And fewer GPs are working full-time. This is undermining the sustainability of some practices, which then close. A rising population means the number of registered patients has increased substantially. Many people feel lucky to get an appointment, and even better if it is with a doctor they have seen before. But the pressure means that many GPs are wondering why they are still in the profession. 

Doctors enjoy an exceptionally high level of public trust and people are grateful for their care and public service. However they are in a unique and very powerful position. Yes they do make at least double the national average wage and enjoy great professional status, but they also feel they are increasingly being asked to ever more with ever less. 

While time pressure, red tape and targets have resulted in a loss of autonomy, there is also resistance to encouraging other health professionals to take over some of their workload, such as empowering pharmacists with more clinical decisions. Richard Horton (editor of The Lancet medical journal) believes it is time to change the system and make it easier for patients to access specialists direct, because the existing referral system causes unnecessary and potentially dangerous delays to patient care.

Does the NHS really need more money? A decade of austerity was caused by the health service being awarded much smaller rises than previously, though government has gone some way to rectifying this.
At the beginning of 2000, the health service received just over a quarter of public spending. Now it is approaching half but resources are not infinite.

Soaring demand for services, crippling legacy contracts with the private sector, mismanagement and waste means the NHS is always in financial trouble. In 2018/19, just under half of all NHS trusts were in deficit, of which nine were in financial special measures. Things improved in 2019/20 with 27% of trusts in deficit and seven in special measures.

There is a good case for continuing with a universal system that means no matter how rich or poor you are, you are entitled to the same treatment. At the same time, we need to rethink the NHS's purpose. Despite our health in general being better than ever, there is increasing medicalisation of everyday life and anxiety about our health. Doctors over-treat patients because of a risk-averse culture. It is easier to use ineffective medicines than to do nothing. The trend in medical science is to pour more and more money into aggressively treating seriously ill patients who are close to death with ever more expensive treatments. We need to work out what the boundaries of the health system should be.

Where should the money come from? The American system of individual health insurance policies prices out those on lower incomes. Options of (a) a specific tax for funding the NHS, (b) making pensioners who continue working after retirement age pay National Insurance, and (c) scrapping universal free prescriptions for the over-60s would be unpopular for those who have already been paying tax during their working lives. In 2022 all workers started paying the Health & Social Care levy of 1.25% in National Insurance payments to help manage the social care crisis. As with all such charges, the money is never ring-fenced and governments are always tempted to raid them for other, more immediate purposes.

Social care and the NHS The health system is struggling to discharge patients who are medically fit to leave hospital, but cannot because there is no support in the community. Summer 2022 data shows more than half of patients ready to leave, could not. Much social care is provided by the social care system which is run by councils. Unlike the NHS, social care has had increased funding over the past decade. The government plans to introduce a cap on care costs but this protects people's assets rather than putting money into the system.

What do other countries do?
Refunding fees. Some countries opt for specific healthcare costs to be paid initially, which are then reclaimed by specific patient types (e.g. elderly, retired, low income). In France there is a fee to see a GP; the fee is refunded to those less able to pay. This can discourage time-wasters with trivial complaints, reduce pressure on doctors and free up more appointments for those who are ill. Some people feel that upfront fees to see a doctor would impact on early diagnosis of conditions and therefore early treatment and more successful outcomes. But figures show cancer outcomes in France are better than in the UK, even with charging a fee to see a doctor

Fee exemptions: The UK charges for prescriptions and NHS dentistry. With prescriptions a number of categories are exempt (e.g. pregnant women, children under 16, and those over 60), such that only 10% of people need to pay for medication. 

France and Germany have a better level of acute hospital beds than we do. But Scandinavian countries don't - and their healthcare is often regarded as the best in the world. They have superb social care services which enable them to prevent many problems before the need for hospital admission is needed. But they pay far higher taxes than we do.

'Hotel' charges, where patients pay a nominal fee (about £8 per night) for a bed, to cover meals and bed-linen laundry. (France and Germany)

Old buildings, new buildings Many hospital buildings are old, and were built to different standards and for different ways of treating people. Almost a third were built before 1974, and another ten per cent dates back to the 1980s. Many trusts have both old and new buildings, but pay so much on the mortgage for new builds that they cannot afford to maintain older premises. So collapsing ceilings, leaking roofs, burst pipes, broken boilers, malfunctioning air-conditioning systems and many other issues are a challenge to hospital management and often a danger to patients. But there is no incentive for trusts to tell the truth about dilapidated buildings.

Buildings constructed and maintained via Private Finance Initiatives (PFI), were almost all set up during New Labour years. Without these deals there would be far fewer modern hospital, well-kept and looking good, nice environments in which to be treated. But PFI builds come at a crippling price in ongoing quarterly payments on contracts, whose average length is 31 years. Latest estimates suggest the final bill will exceed £80 billion for buildings which would have cost about £13 billion to construct if paid for upfront.

Healthcare management. While the image of the incompetent NHS manager persists, inspectors rate 70% of NHS Trusts as being well led. However, there are no specific qualifications or experience needed to be a hospital boss, responsible for the welfare of thousands of patients and managing huge teams of staff and vast sums of taxpayers money. And rarely any consequence for those who screw up. 

The Care Quality Commission is the independent regulator of health and social care services. Failing trusts have insufficient staff, inadequate medical care and 'dire' end of life care. Specific issues include overcrowding, breaching A&E waiting-time targets, shortage of doctors, use of agency nurses, poor staff communication and medical record keeping, inexperienced doctors, clinical staff shortages and inadequate IT systems, failing to inform the coroner of serious incident investigations before the bodies were cremated, meaning the truth about how someone died and the hospital's role in the death, could not be uncovered. Combined, these issues indicate an organisation that lacks basic systems and structures to guarantee a decent standard of care.

Those in positions of responsibility have a legal 'duty of candour'. In reality, a deeply disturbing culture permeates the health service, especially hospital trusts, meaning errors, abuses and failings are routinely covered up, and staff are fearful of speaking out, making it more difficult to improve matters. Professor Sir Brian Jarman developed a way of measuring whether hospitals have higher or lower death rates than expected in order to create a reasonable measure of quality of care. His methodology adjusts patient data such as age, gender, deprivations levels and whether it was an emergency admission. Depressingly, managers worked out that by giving more patients a 'palliative care code' (in hospital for end of life care), the hospital could not be criticised for failing to save them, thus dramatically reducing official death rates. Other hospitals reduced death rates by discharging dying patients to hospices. Jarman claims the Department of Health did not want to receive the alert system, effectively saying 'Please don't tell is what's wrong'.

Problems also occur with the split between clinicians and managers. Hospital consultants exert huge power and influence in the NHS and the vast majority are decent, hard-working and honest. But some routinely capitalise on poor management by taking money for hospital sessions they did not carry out, fiddling rotas and boosting private practice by deliberately slow productivity in NHS time. Private hospitals have efficient operating lists because they are paid per patient by an insurer, by the private hospital or are self-paid by the patient. As a business, a private hospital will ensure its resources are being used for the most profit.

Basic NHS salaries for consultants are modest relative to earnings in private practice. If consultants could earn significantly more from the NHS, it would reduce or even eliminate the tension between public and private work. Encouraging consultants to work full-time for the NHS is needed to sustain the health service. Until that happens, managers need to ensure hospitals get what they pay for.

Data systems Hospitals are still working with patchy, unreliable and outdated computer systems, leaving doctors and nurses making critical decisions in the dark. Parts of the NHS remain in the digital Dark Age, especially with patient records. 

And early 2000s efforts to modernise the patient record system ended in an expensive contracting fiasco. Today across the NHS, huge sums are still squandered procuring software that is unfit for purpose and must then be upgraded, repaired or changed, usually by the same company that failed to provide what was needed in the first place. Failure to train staff in new systems results in chaos and potentially puts patients at risk. 

However the pandemic showed that the NHS can change swiftly on occasion, when (for better or worse) online consultations became mainstream. 

Inefficiency It has been estimated that hundreds of millions of pounds are lost every year due to time-wasting and operating theatres being under-used. (a) Surgery starting so late in the morning that patients at the bottom of the list were sent home without having had their operation or were delayed until the following day. (b) Operations cancelled to suit staff, e.g. a member of staff thought the list would not finish on time, causing them to stay over their scheduled work time. NHS workers have little or no incentive to maximise output. They are paid the same amount however many patients they see and slow work is rarely reprimanded. It is a testament to the dedication of the depleted workforce that the NHS gets as much done as it does.

Acknowledging mistakes is the only way to improve a service. Datix is the most widely used patient safety database in the NHS. It relies on staff inputting information about safety incidents, so reveals the blunders and oversights, accidents and abuses, communication failures and confusions that take place every day in NHS trusts. Examples are errors with anaesthetics, late cancer diagnoses, drug dosage mistakes, medicines given to the wrong patients, botched gynaecological operations and injuries to mothers during childbirth, blunders with blood transfusions and lapses in infection control. But some adverse incidents are not recorded in the first place as there is widespread reluctance to flag up problems. Datix is there to highlight risk and learning from mistakes, but people don't like using it because they are afraid of how it will impact on themselves. 

Medical negligence lawsuits. The number of compensation claims is soaring and settling disputes takes a big chunk out of the already stretched NHS budget. NHS Resolution, the quango that handles medical negligence lawsuits, paid out £2.4 billion in damages and costs for claims in 2018/19. 

When to stop treating people. Charlie Gard, patients in long term comas, etc

Patients must use the NHS more appropriately and take more responsibility for looking after themselves. The single biggest issue is the national struggle with obesity. A third of children leaving primary school are overweight or obese, as are almost two-thirds of adults in England. The body positivity movement has been hijacked by some fashion brands and social-media influencers claiming it as an acceptable lifestyle choice. There is a growing recognition that drugs are not always the answer to patients' problems. Those who complain of loneliness, stress, depression or anxiety may get more out of group activities such as singing in a choir.

The time has come for zero-tolerance for those who fail to turn up to GP and specialist appointments. With privilege comes responsibility, and as attempts to educate patients about the cost of such behaviour has not worked, some system of sanctions is needed. Sticking-plaster solutions will only accelerate the decline, fuelling the market for private-health insurance for those who can afford it, and bringing in the two-tier systems the NHS was designed to avoid.

How to get things changed? The NHS is generally held in high regard, and people were impressed by the way the service responded to the coronavirus pandemic so any debate over how it is run and funded is sensitive. But most believe that the NHS is now in a worse state than before the crisis, which exacerbated existing problems (chiefly waiting times and differing standards of care nationwide) and that things are unlikely to improve soon.

Surgeries and hospitals are places where people receive treatment when things have already gone wrong. Globally and in the UK, the key issues are: high blood pressure, smoking, household air pollution, low fruit intake, alcohol use and high Body Mass Index. Other contributory factors are: low childhood weight, excessive salt intake, insufficient nuts and seeds, iron deficiency, sub-optimal breast feeding, high total cholesterol, low intake of whole grains, vegetables and omega-3, drug use, occupational injury, too much processed meat, intimate partner violence, low fibre intake, poor sanitation, vitamin A deficiency, zinc deficiency and dirty water. It is not lack of medical care that causes illness in the first place.

The NHS can encourage people to take part in health screening, to have vaccines, give up smoking, lower alcohol intake and eat their 'five a day' but the Dept. of Health cannot create the conditions that enable the population to make health lifestyle choices. Politicians over-estimate the impact of health spending, when attention would be better directed at addressing the factors that make people unwell in the first place. The need is to boost public spending on education, housing, welfare, and so on, to improve health outcomes. But while good healthcare does not equate to good health, poor healthcare equals worse death.

How do we reform? The founding principles of the service - available to everyone and free at the point of use - means ideas for reform are met with suspicion. Those who have identified the failings and problems do not believe there is any case for diverging from the founding principles, and no political party would do so. But change is necessary and in order to identify the right changes, we need to know where we are now.

With politicians unlikely to set aside traditional differences, the need to take on vested interests requires cross-party co-operation, so there is a case for establishing a Royal Commission to explore the most fruitful ideas for reform.

Sources















Sunday, 27 November 2022

Background to Charlie's Law

Today many adults and children are helped by new medical treatments for serious conditions and accidental injuries but many are too ill or injured to be helped. Families in shock or distress about a loved person may then put their trust in experimental treatments, even where there may be no evidence as yet that these work. While initially treated with mechanical ventilation as doctors assess conditions or injuries, there comes a point when a discussion about withdrawing treatment is needed. 

A complicating factor is when other countries offer to treat the patient without seeing the medical records and test results.  

We don't hear about the many cases where the patient and/or family and doctors agree on this point but where there there is disagreement, recently families have made the issue public to put pressure on doctors to continue treatment, even when the patient will not recover. 

The parents of Charlie Gard have since set up the Charlie Gard Foundation to work a bill for Parliament on 'Charlie's Law'. They see an urgent need for changes in the law, policy and legal and health practices to support both families and medical and legal professionals involved in emotive, difficult and life-changing circumstances. They have been working with NHS medical professionals, world-leading ethicists and legal experts to develop draft legislation with the aim of preventing further long and painful conflicts between hospitals and families with sick children. 

Three key changes proposed.

  • Prevent cases reaching court. Both families and medical professionals would prefer this. The new legislation would provide access to clinical ethics committees throughout NHS hospitals, access to medical mediation where there are differences of opinion, and speedy access to all medical records including raw data.
  • Help parents get the support they need for better access to advice on ethics and their rights, independent second opinions, and legal aid so families do not have to face having to pay for costly legal representation, and are not forced to rely on funding from outside interest groups.
  • Protect parental rights by restricting court involvement to cases where there is a risk of significant harm to the child.

Terminal genetic conditions. Some children are born with life-limiting genetic conditions. While doctors are able to use mechanical ventilation to help breathing and tube-fed nutrients, no treatments for these these conditions are currently available. Doctors will aim to keep the child comfortable initially but at some point physical deterioration means that they will suggest removing medical help in the best interests of the child.

This was the case with Charlie Gard (4 Aug, 2016 to 28 Jul. 2017) who was born with mitochondrial DNA depletion syndrome (MDDS), a rare genetic condition that causes progressive brain damage and muscle failure, for which there is no treatment and usually causes death in infancy. While being cared for at Great Ormond Street Hospital, doctors contacted New York neurologist Dr Hirano, who was working on an experimental nucleoside treatment and thought there was a "theoretical possibility" that it would help. Dr Hirano and a member of the GOSH medical team discussed the case and agreed that the experimental treatment was unlikely to help if there was irreversible brain damage and that a baseline MRI scan was needed to rule out "severe brain involvement". to rule out . The GOSH team intended to try the treatment and started work on an application to the hospital ethics committee and invited Hirano to visit and examine Charlie (the visit did not happen till July 2017).

When in January 2017 Charlie had seizures that caused brain damage, doctors were of the view that further treatment was futile and might prolong suffering and began discussions with his parents about ending life support and giving palliative care. However, his parents still wanted to take him to the US for experimental treatment and raised funds for the transfer. In February 2017 the hospital asked the High Court to override the parents' decision. The parents appealed but British Courts and the European Court of Human Rights supported the hospital position. In July 2017 Dr Hirano visited Charlie but after examining scans of Charlie's muscles, determined that it was too late for his treatment to help. On 27th July, by consent, Charlie was transferred to a hospice, mechanical ventilation was withdrawn and he died on 28 July 2017.

Brain death. This is permanent, meaning that the affected person will never regain consciousness or start breathing on their own. They are legally confirmed as dead with the time of death on their death certificate logged when they fail a set of tests. This can be confusing to many people because brain dead people can still have a beating heart and their chest will rise and fall with every breath, which is due solely to life support machines - not because they have miraculously regained the ability to do this themselves. Occasionally also the limbs and torso can move, due to reflexes triggered by nerves in the spine that are not linked to the brain - this does not indicate that the brain is working. [By contrast, the the brain stem still functions in someone in a vegetative state.

When the brain stem stops working, it cannot send messages to the body to control any functions and cannot receive messages back from the body. This damage is irreversible. Six tests are used to determine brain death, including pupils not responding to light, having no cough or gag reflex and being unresponsive to pain. MRI scans can also show areas of damage and necrosis.

On 7th April 2022 12-year old Archie Battersby was found unconscious by his mother with a cord round his neck at their home in Essex. (His mother thought he might have been trying a challenge seen on TikTok.) Taken to Southend Hospital, he had suffered severe brain injuries and needed life-sustaining support, including mechanical ventilation and drug treatment. He never regained consciousness. On 8th April he was transferred to the Royal London Hospital in Whitechapel. With no sign of improvement, the hospital was granted High Court permission on 13th May for Archie to undergo brain stem testing. On 16th May two specialists tried to administer brain stem function tests, but were unable to as Archie did not respond to a peripheral nerve stimulation test, a precursor to the brain stem test. Continued life support would only delay cessation of breathing and other body organs would also deteriorate. With the parents still opposing removal of mechanical ventilation, believing that the spinal nerve triggered movement showed consciousness, further court cases gave doctors permission to use MRI scans, which took place on 31st May. Despite medical evidence from the scans, the parents still refused permission to end life support. During June 2017 further court cases in the UK, including the Supreme Court, gave permission to the hospital. On 3rd August the European Court of Human Rights deemed it a matter for UK courts. The family wanted him to be moved to a hospice for this but the High Court, taking medical evidence into account, ruled he was too unstable to be transported by ambulance. Archie's life support was withdrawn early on 6th August and he died at 12.15 BST with members of his family by his bedside.

END


Sunday, 13 November 2022

Self-sterilising Plastic Kills Viruses Like Covid

Scientists at Queen's University Belfast have developed a plastic film that is self-sterilising and could make it harder for infections, including Covid, to spread in hospitals and care homes. The plastic film is cheap to produce and can be fashioned into protective aprons and other clothing. 

The plastic film works by reacting with light to release chemicals that break viruses, killing them by the million, even in tough species that stay on clothes and surfaces.

Studies had shown that under certain conditions, the Covid virus was able to survive for up to 72 hours on some surfaces and under certain conditions. Other viruses can survive for longer - the norovirus (winter vomiting bug) can survive outside the body to two weeks while waiting for someone new to infect.

The aim of the research was to create a material that viruses could not survive on. While copper is known to kill microbes on contact, it is not very flexible. The new plastic contains nanoparticles of titanium dioxide, which react with ultraviolet light (which can be the tiny amount emitted by a fluorescent tube) to release molecules called reactive oxygen species. Theses react with the genetic material of the virus, the proteins it uses to enter the body, and the fatty sphere around it, resulting in a dead virus.

In the laboratory the material was tested against four types of virus: two influenza viruses, the Covid virus and a picornavirus, which is a very stable virus outside the body. Large amounts (far more than would start an infection) of each of these viruses were placed on the new plastic and went down down from one million viruses to nothing. The effect is seen in less than one hour and maximum death in two hours. In real conditions far fewer virus particles would be present, so it is likely there would be an effect in the first few minutes.

Prof. Andrew Mills of the university's chemistry department said "This film could replace many of the disposable plastic films used in the healthcare industry as it has the added value of being self-sterilising at no real extra cost."

Current personal protective equipment used in hospitals works well, but infections can take place when taking off or putting on PPE. The team are also investigating its use for hospital tablecloths and curtains and use in the food processing industry. Real world trials will be needed to work out how much of a difference it would make.

Source: Self-sterilising plastic kills viruses like Covid by James Gallagher, BBC News 9th Sept. 2022


Sunday, 30 October 2022

Sticky tape eczema test for newborns

 Italian researchers have developed a simple test using sticky tape that can predict whether newborns will go on to to develop childhood eczema.

Their research showed that newborns with higher levels of the compound thymus and activation-regulated chemokine were more than twice as likely to to have developed eczema two years later.

The condition affects up to one in five children, causing cracked and itchy skin which can become infected. Discovering the risk early on would help doctors to treat and prevent the skin problem.

Source: Sticky tape eczema test for newborns gives medics an early warning about the painful skin disease. Daily Mail Health Notes: 14 Sept. 2022.

Sunday, 16 October 2022

New Discovery on Causes of Dementia

Researchers at bio-tech firm Neuro-Bio, based in Oxford, have made a significant discovery about the causes of dementia. Almost 900,000 people in the UK suffer from dementia, and nearly 70,000 die from it every year. The number of suffers has been projected to rise to 1.6 million by 2040.

Research to date has focused on developing drugs to destroy amyloid plaques (protein deposits) that build up in the brain, affecting memory and cognitive function. However, recent studies show no improvement in symptoms after taking these drugs. 

Research by a team led by Dr Susan Greenfield's on the causes of Alzheimer's dementia has led to the hypothesis that something else could be the initial cause and that amyloid plaques build up well after brain degeneration has begun.

New studies have shown that cells at the centre of the brain, in the isodendritic core, are the first to begin dying in the brain of someone with Alzheimer's disease (the most common form of dementia) often ten to 15 years before they experience symptoms. When these cells die, it sets off a snowball effect, causing more and more cells to die.

While scientists are still unsure why this process begins, Neuro-Bio claims to have found a molecule responsible for causing the damage, called T14. They have developed a drug to limit the cell damage caused by T14 and initial trials on mice show this is effective. 

Human trials are expected to follow, to investigate whether it is safe and effective in humans. The treatment is given as a nasal spray. 

T14 can also be measured in blood and Neuro-Bio is also developing this biomarker as a companion diagnostic.

Source: Oxford scientists hail major breakthrough which could provide relief to 900,000 Britons with dementia by Ethan Ennals, Daily Mail, 2nd April 2022.

Sunday, 2 October 2022

Air Pollution and Cancer

 Researchers at the Francis Crick Institute in London have shown that air pollution does not cause cell damage directly but 'wakes up' old damaged cells. This transforms our understanding of how tumours develop and it may now be possible to develop drugs that stop cancers forming.

The classical view of cancer is that it starts with a healthy cell, which over time acquires more and more mutations in its genetic code, or DNA, until it reaches a point where is becomes a cancer and grows uncontrollably. However it is also known that cancerous mutations are also found in seemingly healthy tissue, and many substances known to cause cancer, including air pollution, don't seem to damage people's DNA.

Research has now produced evidence of a different idea. The damage is already there in our cell's DNA, as we grow and age, but there needs to be a trigger to make it cancerous. The research focused on exploring why non-smokers get lung cancer. While the vast majority of lung cancers are caused by smoking, one in ten cases is due to air pollution.

Focusing on a form of pollution called particulate matter 2.5 (known as PM2.5), which of far smaller than the diameter of a human hair, they carried out a series of detailed human and animal experiments which showed the following.

  • Places with higher levels of air pollution had more lung cancers not caused by smoking.
  • Breathing in PM2.5 leads to the release of a chemical alarm (interleukin-1-beta) in the lungs.
  • This causes inflammation and activates cells in the lungs to help repair any damage.
  • But around one in every 600,000 cells in the lungs of a 50-year-old already contains potentially cancerous mutations.
  • These are acquired as we age but appear completely healthy until they are activated by the chemical alarm and become cancerous.
And crucially, the researchers were able to stop cancers forming in mice exposed to air pollution by using a drug that blocks the alarm signal.

People who had never smoked but developed lung cancer often had no idea why. To give them clues about how this might work is important, since 99% of people in the world live in places where air pollution exceeds the WHO guidelines, so it impacts everyone.

The results also showed that mutations alone are not always enough to cause cancer. It can need another element. We even need to rethink how smoking causes cancer - is it just the known DNA damage caused by the chemicals in tobacco or is the smoke causing inflammation too? The idea that mutated DNA is not enough to cause cancers and that they need another trigger to grow was first proposed by Isaac Berenblaum in 1947.

Source: Air pollution cancer breakthrough will rewrite the rules. By James Gallagher, Health and science correspondent, BBC News. https://www.bbc.co.uk/news/health-62797777 

Sunday, 25 September 2022

Galleri screening test for cancer trial by NHS

On the 13th September 2021 the NHS began the world's largest trial of a revolutionary new blood test that can detect more than 50 types of cancer before symptoms appear.

Patients whose cancer is found early at stage one or two typically have a broader range of treatment options available, which can be curative and are often less aggressive. Diagnosis at the earliest stage has typically between five and ten times the survival rate with those found at stage four.

The Galleri test

This simple blood test looks for the earliest signs of cancer, especially those that are usually difficult to identify early or for which there are no NHS screening programmes, such as lung, pancreas and stomach cancers. The test was developed by the firm of Grail, California and is is already in use in the USA.

The test works by finding chemical changes in fragments of genetic code (cell-free DNA or cfDNA) that leak from tumours into the bloodstream. Finding these changes does not mean someone actually has cancer, just that they might have cancer and will need follow up tests.

The Trial

The NHS aims to recruit 140,000 volunteers in eight areas of England to see how well the test works. Participants must not have already had a cancer diagnosis in the last three years.The first people to take part will have blood samples taken at mobile testing clinics in retail parks and other convenient community locations. They will then be invited back to give further samples after 12 months and again at 2 years.

The study is a randomised control trial (RCT). Half the participants will have their blood screened with the test immediately. The other half will have their sample stored and may be tested in the future. This will allow scientists to compare the stage at which cancer is detected between the two groups.

People will only know if they are in the test group if they are among the small minority whose test detects potential signs of cancer in their blood. They will be contacted by a trial nurse and referred to an NHS hospital for further tests. All participants will be advised to continue with their standard NHS screening appointments, and contact their GP if they notice any new or unusual symptoms.

Initial results of the study are expected by 2023 and, if successful, NHS England plans to extend the testing to a further one million people in 2024 and 2025.

Source: Various news sites in 2021.

Sunday, 11 September 2022

The Queen has died - Long live the King

Queen Elizabeth II died on the 8th September 2022, but what happens next?

Succession

Her eldest son, Charles, became king immediately. The new monarch chooses the name they will be known as - in this case Charles III.

An Accession Council, by custom held at St James's Palace, is usually convened within 24 hours of the death of the monarch and the accession of the successor to the throne. The Council should be held before Parliament meets, and Parliament should meet as soon as practicable after the death.

The Accession Council comprises certain Privy Counsellors, Great Officers of State, the Lord High Mayor and High Sheriffs of the City of London, Realm High Commissioners, some senior civil servants and certain others invited to attend, but without the new Sovereign. This meeting formally announces the death of the monarch and proclaims the succession of the new sovereign. The Accession Proclamation is signed by those members of the Royal Family who are Privy Councellors, the Archbishop of Canterbury, the Lord Chancellor, the Archbishop of York, the Prime Minister, the Lord Privy Seal, the Lord Great Chamberlain, the Earl Marshall and the Lord President of the Council

Following this the Sovereign holds their first Privy Council, which is attended by Privy Counsellors only.

Funeral

The funeral will be held at Westminster Abbey on Monday 19th Sept. King Charles III has approved a bank holiday on the day of the funeral.

The Queen's coffin was first laid to rest in the ballroom at Balmoral to allow the Royal Household to pay their respects. On Saturday 10th Sept. her coffin will then be driven via Ballater, Aberdeen, Dundee and Perth to the Palace of Holyroodhouse in Edinburgh. On Monday a procession will march up the Royal Mile St Giles' Cathedral in Edinburgh, where a Vigil of the Princes is expected to take place with members of the Royal Family. The public may be able to file past her coffin while she lies in state. On Tuesday she will be flown to London, and be driven from Buckingham Palace to Westminster Hall, where people will be allowed to file past over a period of four days' lying in state. Her coffin will be draped with the Royal Standard and once in Westminster Hall it will be topped with the Imperial State Crown, orb and sceptre.

The Queen's coffin will then be taken to Westminster Abbey for the funeral service. Following the funeral service, her coffin will be drawn in a walking processions from the abbey to Wellington Arch, at London's Hyde Park Corner before heading to Windsor by hearse. The Queen's coffin will make its final journey that afternoon to St George's Chapel in Windsor Castle for the committal service. Her coffin will be lowered into the Royal Vault, before being interred in the King George VI memorial chapel, located inside St George's Chapel.

Mourning

A period of national mourning is now in place and will last until the day of the state funeral.

The period of Royal Mourning by the Queen's family will continue for seven days after the funeral.

Other events

The union flag will be flown at half mast on government buildings until the morning after the funeral. Flags will return to full mast for a 24-hour period beginning at 13:00 BST on Saturday to mark the proclamation of Charles as King, before returning to half mast.

There will be a remembrance service at St Paul's Cathedral on Friday (9th Sept.?) attended by the prime minister and other senior ministers.

On Friday 9th Sept. bells will toll in tribute to the Queen at Westminster Abbey, St Paul's Cathedral and Windsor Castle. Around the country parish churches with bells will also be tolled in tribute. Gun salutes of 96 rounds to mark each year of her life will be fired in Hyde Park and elsewhere.

Many sporting fixtures have largely been cancelled, as have the final three of the BBC Proms concerts. Theatre performances are expected to continue, observing a minute's silence. Strikes for industrial disputes have also been cancelled.

Changes of title

The Duke and Duchess of Cambridge automatically became Duke and Duchess of Cornwall and Cambridge. The title of Prince of Wales is the gift of the sovereign and is not automatically passed on. However, King Charles has bestowed the title of Prince of Wales on Prince William and his wife Catherine becomes Princess of Wales.

The children of the Duke and Duchess of Sussex could now be titled Prince Archie and Princess Lilibet as on the death of the Queen they are now the children of sons of the sovereign. It is not known whether Harry and Meghan will use the titles for their children. The Duke of Sussex is now 5th in line for the succession, with his brother William 1st in line and then William and Kate's children George (2nd), Charlotte (3rd) and Louis (4th).

Currency, stamps and passports - and more

The money and coins currently in circulation will be replaced with the face of King Charles III. A new portrait of Charles will be commissioned, from which millions of pounds worth of new currency will be printed by the Royal Mint and distributed across the UK. The old currency featuring the Queen's face will be gradually fazed out.

As with coins, new stamps featuring Charles will simply be slowly brought into circulation. Any current stamps you own with the Queen on will still be eligible for use.

All British passports are issued in the name of Her Majesty, and are still valid for travel. The wording in the inside of the front cover of new passports will be updated to His Majesty.

When a monarch dies, royal warrants they issued become void and a company has two years to stop using the royal arms. The warrants Charles issued as Prince of Wales will continue because they go with the household, not the title.

Police forces in England and Wales will have to change the royal cypher of Queen Elizabeth II in the centre of helmet plates.

Leading barristers have become King's Counsel (KC) instead of Queen's Counsel (QC).

END



Sunday, 31 July 2022

Human Sexes, Gender and Transgender

 At the present time - 2022 - there is much in the media about the issues of gender and sex. These are also topics that generate a lot of (sometimes heated) discussion. So this post aims to clarify some of this area.

Sex (Definition): Either of the two major forms of individuals that occur in many species and that are distinguished respectively as female or male especially on the basis of their reproductive organs and structures. (Merriam-Webster Dictionary)

Sexual Orientation (Definition): An enduring pattern of romantic or sexual attraction (or a combination of these) to persons of the opposite sex or gender (heterosexual), the same sex or gender (homosexual), or to both sexes and more than one gender (bisexual). The lack of sexual attraction to others (asexuality) is sometimes defined as a fourth category. (Wikipedia)

Sex: Your birth certificate is the document that records the sex (male or female) of a child born in the UK. This information is given to the local Registrar by the person registering the birth, usually one of the parents, along with the forenames that have been chosen for the child. 

For the vast majority of births, the physical sex of the child is obvious as either male or female. For a very rare number, the sex of the child is indeterminate or where there are intersex traits. It is estimated that this occurs once in every 1,500 births, In these cases the General Register Office advice is that registration is deferred until medical investigations are complete. 

Tests typically include testing chromosomes, hormones and internal organs. Test results do not always indicate male or female, but can be on a sliding scale between the two. Ultimately the sex chosen for an intersex baby is the one doctors and their family believe they will grow up to identify with best. In past years, surgery was typically the first thing to do, but many now feel this should be delayed. 

To further complicate matters, some Disorders of Sex Development (DSD) are not obvious from external appearance and are only identified later when a child needs surgery (e.g. for a hernia) or hormone testing for other reasons. 

Sexual orientation: It is only possible to estimate the proportions of a population that identify as lesbian, gay or bisexual by using the statistics from national surveys and censuses. In the UK in 2019, an estimated 1.4 million people aged 16 or over identified as LGB; this was around 2.7% of a population of c. 67.1 million.

There are differences in age groups. While 2.7% of those aged 16 and over identify as LGB, the proportion of all 16 to 24 year old's identifying as LGB is around  6.6%. Possible reasons for this pattern are that younger people could be more likely to explore their sexuality, combined with more social acceptance of different sexual identities and the expression of these today. However, for the first time, older people (aged 65 years and over) also showed an increase in those identifying as LGB (from 0.7% in 2018 up to 1.0% in 2019).

Source: UK Office for National Statistics. NB: Since these figures have not been collected in the past, it is not clear what proportion of those aged 16-24 will continue to identify as LGB as they progress through adolescence.)  

Gender (Definition): Gender is the range of characteristics pertaining to femininity and masculinity and differentiating between them. Depending on the context, this may include sex-based social structures and gender identity. Most cultures use a gender binary, having two genders; those who exist outside these groups may fall under the umbrella term 'non-binary'. (Wikipedia)

Transgender (Definition): Transgender people have a gender identity or expression that differs from the sex they were assigned at birth. The term may also be used to refer to people who are non-binary or genderqueer, and to cross-dressers. Being transgender is distinct from sexual orientation. (Wikipedia) Some transgender people undergo surgery hormone treatment and lifelong hormone treatment to 'become' the other gender. However, genetically their body cells will remain female or male, which may have other health implications.

Transsexual (Definition): People who desire medical assistance (hormone treatment and surgery) to transition to the physical characteristics of another sex. (Wikipedia)

Human Biology

Genetics and DNA have revealed that humans are not just born male and female. There are at least six biological sexes that can result in fairly normal lifespans. (In addition there are other 'sexes' that result in spontaneous abortion as the body identifies the foetus as non-viable.)

Even today, people think of someone as a 'man' if they look masculine and as a 'woman' if they look feminine. This can lead to some significant misunderstandings of how the world actually works.

  • Mokgadi Caster Semenya: An intersex woman, assigned female at birth and has always lived as a woman, with XY chromosomes and naturally elevated testosterone levels. However as a runner, other competitors felt her higher testosterone levels gave her an unfair advantage over XX women. 2018: The international athletics federation, announced new rules to apply only to those with the 46,XY karyotype, who are now required to lower their testosterone levels in order to compete in the female classification. The medication taken can have side effects.
  • Transgender male to female competing in women's events. More and more male-to-female athletes are competing in women's competitions, creating a dilemma for all involved. Such athletes have been allowed to compete in women's Olympic events since 2012 on condition that this is after castration and two years of hormone therapy. However, others feel that they still have an advantage of the benefit of more androgen for their first 20 years of growth, with a male type skeleton and musculature. It is also likely that a male athlete will have a male brain, since developing foetuses have male imprinting of the brain, which does not go away after androgen  supression and sex change surgery.
The sex of a baby is determined by its sex chromosomes, with XX being female and XY male, but is typically identified by its genitalia or visible sex organs (penis and vagina). However, some babies with the genetic variants listed below can appear to be females or males but actually have other sex chromosome combinations. A study in Great Britain showed that 97 out of 100 people who were actually XXY thought they were a normal XY male, and had few signs that this was not the case.

  • XX = Most common form of Female
  • XY  = Most common form of Male
  • X  = Turner's syndrome (roughly 1 in 2,000 to 1 in 5,000 births). This chromosome variation happens randomly when the baby is conceived. It is not linked to the mother's age. These females tend to be shorter than average, and have under-developed ovaries. Most likely to be diagnosed between the ages of 8 to 14.
  • XXY = Kleinfelter syndrome (roughly 1 in 500 or 1 in 1,000 births). Males are born with an extra X chromosome. Many of them are unaware they have the extra chromosome. Infertility tends to be the main problem.
  • XYY = Jacob's syndrome (roughly 1 in 1,000 births). Affected individuals are usually very tall. Many experience severe acne during adolescence, and other symptoms may include learning disabilities and behavioural problems such as impulsivity.
  • XXXY = (roughly 1 in 18,000 to 1 in 50,000 births). Characterized by the presence of 2 extra X chomosomes in males. Sometimes referred to as a variant of Klinefelter syndrome, but differs from that and is more severe. Signs and symptoms vary but include learning difficulties, intellectual disability, low muscle tone, delayed growth, distinctive facial features and various birth defects that may affect the genital and musculoskeletal systems. Many have poorly developed social skills and delayed language development. The condition is not inherited and likely results from a random error in cell division.
END

Sunday, 3 July 2022

UK Population 2022

Respondents to a recent YouGov survey of 1,800 adults indicates that people overestimate the scale of ethnic, religious and sexual minorities in the UK and underestimate the white population. So what are the official figures?

Religion: Some 4% are Muslim, and just 0.5% are Jewish.

Ethnicity: 87% are White, 3% are Black, and 10% other ethnicity.

Diet: Around 4% are Vegetarian.

Sexual orientation: Some 1.3% are Bisexual, and 1.8% are Gay/Lesbian. Between 0.3% and 0.7% self identify as a different gender to their biological sex.

Why does the public view differ from the actual figures? Recent efforts to be more inclusive in films, the music industry, broadcasting (tv) and print media, and to remove historical bias against minorities in applying for jobs, and being the first to lose jobs (e.g. in downsizing companies), together with the fact that ethnic minorities tend to live close by others of like ethnicity, have inadvertently skewed public perception.

I've not been able to find the YouGov survey results so no link to that.

Source: Mick Hume article in Daily Mail, 7 June 2022

Sunday, 19 June 2022

Eurovision Voting Explained

Confused by the voting for the 2022 Eurovision song contest? I was too, so I've checked out what exactly goes on.

There are two sets of votes. These are (a) the votes of the national juries and (b) the public telephone vote.

Voting by national juries.
The juries watch the second dress rehearsal and rank all the entries in order in a single list. The entry that is top of the list gets 12 points, the second on the list gets 10 points and the third on the list gets 8 points. The entries from fourth down are allocated 7, 6, 5, 4, 3, 2 and 1 points.

These results are announced live at the event by video from each country.

Voting by public
Voting takes place during a specific timed slot after the jury votes are announced. Members of the public vote by telephone. The number of votes for each entry are counted and the entries are then ranked in order from most popular to least popular. The points allocated are the same as for the juries: 12, 10, 8, then 7 down to 1. The points from all participating countries are combined into a single score, so with 40 participating countries, the maximum number of points available is 480 (40 x 12).

END

Sunday, 29 May 2022

Mutations and the risk of cancer

 A new study carried out by the the Wellcome Trust Sanger Institute sheds new light on the role of genetic changes in ageing and cancer. By comparing the accumulation of mutations across many animal species, researchers found that despite a huge variation in lifespan and size, different animal species end their natural life with similar numbers of genetic changes.

The study (published 13 April 2022 in Nature) analysed genomes from 16 species of mammal, from mice to giraffes. The analyses confirmed that the longer the lifespan of a species, the slower the rate at which mutations occur, lending support to the theory that somatic mutations play a role in ageing.

Somatic mutations are genetic changes that occur in all cells throughout the life of an organism. In this natural process, in humans cells acquire around 20 to 50 mutations per year. Most of these are harmless, but some can start the process of developing cancer or impairing the normal functioning of a cell. 

Since the 1950s there has been speculation that these mutations may play a role in ageing, but it is only now with technology able to observe genetic changes in normal tissue that research can start to answer whether this is the case.

Peto's paradox. Since cancers develop from single cells, species with larger bodies (and therefore more cells) were thought to have a higher risk of cancer. But cancer incidence across animal species is independent of body size. Large bodied animal species are thought to have evolved mechanisms to prevent cancer but until now this has not been tested.

The Wellcome Sanger Institute study used new methods to measure somatic mutation in 16 mammalian species with a wide range of lifespans and body sizes, including human, mouse, lion, giraffe, tiger and the long-lived and highly cancer resistant naked mole-rat. Mutation rates were measured in intestinal stem cells. Analysis of the patterns of mutations indicated that somatic mutations accumulated linearly over time, and were caused by similar mechanisms across all species, including humans, despite different diets and life histories. Also the rate of somatic mutation decreased as the lifespan of each species increased. Researchers now want to study further diverse species, including insects and plants.

Peto's paradox still needs an answer, since after accounting for lifespan, researchers found no significant link between somatic mutation rate and body mass, indicating that other factors must be involved as well. It does not seem that evolution has chosen a single way of controlling the incidence of cancer, but that it is possible that every time a species evolves a larger size than its ancestors, evolution might use a different solution to the problem.

On average a giraffe is 40,000 times bigger than a mouse, and a human lives 30 times longer, but the difference in the number of somatic mutations per cell at the end of lifespan between the three species only varied by around a factor of three.

The exact causes of ageing remain unsolved, though it is likely to be caused by the accumulation of multiple types of damage to cells and tissues throughout life, including somatic mutations, protein aggregation and epigenetic changes.

Source: Mutations across animal kingdom shed new light on ageing in Science Daily, 13th April 2022.


Sunday, 8 May 2022

What Time of Day to Take Vitamins

 Nearly half the UK population take vitamin supplements, but experts say when and how you take them changes how effective they are.

Iron: Around three-quarters of women are at risk of iron-deficiency anaemia, mainly due to iron loss during their monthly periods.

  • Take on an empty stomach an hour before bed (and two hours after supper) and combine it with vitamin C or A.
  • Vitamin C can help your body absorb iron as it bonds to iron particles, helping them to dissolve more completely in the gut. Vitamin A can also improve iron absorption.
  • Look for iron supplements that contain vitamin A, or its precursor beta-carotene.
  • Take iron supplements on alternate days, as a 2017 study found that more iron is absorbed taken this way.
  • Avoid taking with dairy, tea or zinc pills. Certain foods, especially dairy - including milk-based drinks, can block iron absorption. And since tea sipped with a meal can inhibit the absorption of iron by up to 90%, take your iron pill with water. And zinc competes with iron because both minerals need to attach to the same 'transporter molecules' in the gut.

Calcium: Many menopausal women take calcium to help prevent the bone-thinning disease osteoporosis. Calcium is often combined in a pill with magnesium, which is also good for bones.

  • Take a supplement (ideally also containing magnesium, vitamin D and vitamin K) with food.
  •  Taking calcium with food will also enhance absorption. Look for products with calcium citrate, which is better absorbed than calcium carbonate.
  • Avoid taking with zinc or iron pills.
Vitamin D: In the winter months, around half the UK population is low in vitamin D, a nutrient vital for healthy bones and strong immunity. This is because we make vitamin D via sun exposure on our skin.
  • Take 10mcg during the winter, in the evening with food (or largest meal of the day) containing fat.
  • Vitamin D is better absorbed if taken with a meal that contains some fat, such as avocado, egg yolks or olive oil.
  • Avoid taking with vitamin E pills; as both are absorbed in the same way.
Vitamin C: Important for the immune system and vital for healthy skin and bones. It is a water soluble nutrient that we can absorb in doses of up to 400 mg. Any excess above this is not stored by the body, but passed out in urine.
  • Take in the morning on an empty stomach. 
  • If taking doses larger than 400 mg (e.g. during a cold), split these throughout the day. 
  • A standard supplement will give you more than enough vitamin C so no need to take liposome-encapsulated products.
  • Best absorbed on a completely empty stomach, e.g. before breakfast, as absorption can be hindered by proteins and fibre in food.
Fish oil: A rich source of two omega-3 fats (EPA and DHA) that have proven benefits for a wide range of illnesses including low mood, heart disease and rheumatoid arthritis.
  • Take with food that contains fat, which triggers the pancreas to release enzymes that help break down the omega-3 oils into fragments small enough to be absorbed through the gut wall.
  • Avoid taking before a workout or sleep to avoid unpleasant fishy burps.
B vitamins: The group of eight B vitamins (including B6, B9 (folic acid), and B12 are vital for healthy blood, nerve function and energy levels. They are water-soluble.
  • Take first thing in the morning on an empty stomach. Choose a supplement with a blend of different B vitamins.
  • Take a blend of B vitamins. Taking folic acid alone can trigger or mask a deficiency in vitamin B12.
  • Avoid taking last thing at night as high vitamin B6 doses can interfere with sleep. Avoid taking with food, as vitamin B12, in particular, binds to the food we eat and can then end up passing straight out of the gut as waste without being absorbed.
Probiotics: These are 'good bacteria' that make up part of our gut microbiome - the community of bacteria that plays a vital role in our digestive health and immune system. A poor diet or medication such as antibiotics can kill off good bacteria, helping bad ones to survive, increasing the risk of gut infections or digestion problems. Probiotic supplements aim to replenish levels of good bacteria. As they are live bacteria, they need to reach the gut intact.
  • Take: half an hour before eating. Take before a meal containing some fat. 
  • Avoid: taking with hot drinks, juices or alcohol.
Magnesium: Useful for bone health. 
  • Take: if using alone for a relaxing effect, take at bedtime.
  • Take care: If you take calcium, then magnesium may help ease anxiety, restless legs, muscle cramps, migraine and improve overall sleep. You should take roughly twice as much calcium as magnesium.
How to take supplements
  • Swallow with a big glass of water. Fluid intake is important to dissolve the tablet, especially for water-soluble nutrients such as B vitamins and vitamin C.
  • Avoid coffee, tea and energy drinks (these also contain caffeine) as caffeine can interfere with the absorption of nutrients. And it's best to wait for an hour after drinking coffee to take supplements.
  • Taking a multivitamin could be a waste of money, as some of the nutrients can compete for absorption. And as they contain both water-soluble and fat-soluble vitamins, taking them on an empty stomach means you don't absorb much of the fat-soluble ones, while taking them with a meal may impair absorption of water-soluble ones.
  • Don't eat nuts before taking minerals (e.g. iron, calcium and magnesium). Phytic acid found in nuts, beans and bran binds to minerals in the gut, meaning that they won't be properly absorbed. This only affects absorption of nutrients eaten at the same meal.
Source: Are you taking your vitamins the right way - or just wasting your money? Experts say that when you take them can determine how effective they are by Caroline Jones, Daily Mail, 28 Feb. 2022


Sunday, 1 May 2022

The Sleeping Beauties by Suzanne O'Sullivan

 The Sleeping Beauties - and other stories of mystery illness by Suzanne O'Sullivan (Picador, 2021)

[The author is a medical neurologist. Her other works on this topic are: It's all in your head: true stories of imaginary illness and Brainstorm: detective stories from the world of neurology.]

 The mind has a lot of power over the body. People can lose consciousness or have seizures through a psychological mechanism as well as part of a disease process. At least a quarter of neurology referrals believe they have epilepsy but instead have dis-associative or psychosomatic seizures. Up to one third of referrals attending a neurology clinic are likely to have a psychosomatic complaint - real physical symptoms from psychological or behavioural causes. The presenting symptoms can also be skin rashes, breathlessness, chest pain, bladder problems, diarrhoea, stomach cramps, and more. While these are symptoms of real problems, when scans and tests fail to reveal a physical cause, many still doubt psychological causes. With no single diagnosis or set criteria for conditions like autism and ADHD, there is a risk of interpretation by the user. Sometimes illness is a sign that the life we have chosen for ourselves is not the right one. Anglo-American cultures tend to consider depression as physiological and psychological, where other cultures regard it as situational.

For most of the 20th century psychosomatic disorders have been labelled 'hysteria' and 'conversion disorder' and viewed from Freud's theories, with hidden psychological trauma converted into physical symptoms. Many people, including doctors, still regard repressed trauma and denied abuse as the full explanation for all psychosomatic disease, even when the patient refuses this diagnosis.

Hysteria (and conversion disorder) are more aptly termed 'functional neurological disorders' (FND). In neurology the term 'functional' has replaced 'psychosomatic'; 'functional' indicates a problem with how the nervous system is working and implies a biological cause, not a mental one. The term 'mass psychogenic illness (MPI) has replaced 'mass hysteria'. A true MPI outbreak actually says more about the society in which it occurs, than it does about the individuals affected. 

  • Mass anxiety disorder occurs out of the blue, without any preceding stresses needing to be present. It usually affects young people and happens in contained environments, such as schools. It spreads by direct contact and comes and goes quickly.
  • Mass motor hysteria can affect people of any age, is more insidious in onset and lasts longer. Typically occurs where there is a background of chronic tensions within a close-knit community.  

The big problem with any MPI is how it is perceived and understood publicly. The way such illness is defined and discussed by the small number of experts who study it is often different to how it is understood outside those circles. In the medical field it is a disorder that arises from group interaction, and is sometimes referred to as a mass sociogenic illness - a social phenomenon rather than a truly psychiatric disorder. By others it is largely presented as a psychological problem, focusing on the individual and ignoring the role of the community. The cliches associated with it are very demeaning to young women, and can make the diagnosis unacceptable for social groups that do not easily fit that category, such as older people and males, or even to conflate it with 'faking' illness.

The media do not help with reports of 'mystery illness', even when a diagnosis of 'non-epileptic seizures' has been given. Reporters often state that 'medical tests have not been able to provide any answers, when they do not recognize the diagnosis is a legitimate medical condition. Publicity can even cause further cases in some circumstances.

Western doctors are trained to interpret symptoms in a literal way and treat as personal, but every medical problem is a combination of the biological, the psychological and the social. Positive blood tests or scan results provide evidence that allows others to believe in the suffering.

People find it hard to accept a psychosomatic disorder diagnosis. There is no correlation between severity or chronicity of disability and the disease process. 'Psychosomatic' and'functional' do not imply less severe or less disabling symptoms, nor are they imaginary; they are not self-limiting and can cause sustained disability. For many, they are a self-perpetuating phenomenon. Some get better, but for others the symptoms are intensified by the experience of being sick. Social and medical interventions affect the way a patient feels about the problem, and can even make things worse. More tests and less understanding of doctors' explanations leave people more confused and worried, leading to further searches for symptoms and possible external causes.

Functional neurological disorders are usually anatomically and biologically impossible. Symptoms come from the unconscious plus an inaccurate understanding of how the body works. Reading descriptions of psychosomatic disorders, people typically relate to some part of the illness described and hope to get a formal diagnosis. If a doctor is sure that a positive asylum decision is the only cure for resignation syndrome, people get to know this, and subconsciously further spread the outbreak. And sadly, many people still struggle to accept a diagnosis of of psychosomatic or functional illness and cannot let go of the idea that there is another explanation - a virus, a toxin or an unknown illness. Despite public perception, epileptic seizures are generally brief, while dis-associative seizures last a long time. FND disorders are not imaginary, but even medical practitioners have been know to dismiss them as malingering, while the public view is that it happens to damaged people.

It is not known why young women are more likely to be affected by these disorders, but theirs is typically a voiceless position in society, a strange and impossible position that women are supposed to occupy. Young women are told they are equal, but held back if they try to assert their equality. Also physical changes - cyclical hormones and tendencies to low blood pressure and fainting - can lead to dis-associative seizures. They can be expected to live traditional conservative lives while finding themselves sexualised by older men.

The book includes chapters on specific psychosomatic outbreaks in various countries.

Sweden: From 2005, some Yazidi refugee children, boys and girls, became anxious and depressed, withdrew into themselves, soon couldn't go to school, spoke less or not at all and eventually appeared to be in a coma, had to be fed by nasogastric tube and could not open their eyes. Between 2015 and 2016, 169 Yazidi refugee children in various towns were affected. Medical tests showed no disease so doctors diagnosed 'resignation syndrome', which exclusively affects children of asylum seeking families (who have usually suffered persecution in their homeland). The asylum process is slow, and might initially be refused. During this period children integrate in school and area, and since they speak and write Swedish, they often translate any letters sent to their parents. Medical assessment of age is fraught with error due to the effects of chronic deprivation, abuse and malnutrition that caused their flight. When granted residency, children usually 'woke up' though not overnight. Yazidi children arriving in other countries do not suffer from this  syndrome. Why? Until recently in Sweden, families with children with resignation syndrome were automatically granted automatic asylum, but with record numbers arriving in 2014, emerging hostility to immigrants led to this being dropped.

Texas USA: This state has a population of ethnic Miskito originally from Nicaragua. They have had outbreaks of 'grisi siknis', that were first reported in the 1970s but actually started earlier in Nicaragua. Symptoms include tremors, difficulty breathing, trance-like states and convulsions and begin with sufferers having a visual hallucination of being visited by a frightening stranger of the opposite sex who comes to lure the victim away. In Nicaragua, to escape they run into the jungle, the community find them and a local healer (shaman) will say ritual prayers. In Texas, typically the outbreaks occur in schools (mostly girls but sometimes boys) and when they attempt to run away they are restrained by family despite resisting strongly. In the Miskito community, young girls are subject to a lot of attention from (often older) men trying to pressure them into a relationship. Sometimes the interest is welcome and exciting for a girl but it conflicts with the moral standards of a conservative Christian church they follow. Being afflicted also means you are attractive. Grisi siknis is now part of Miskito culture.

Khazakhstan: The mining town of Krasnagorsk did well for many years with a population of c.6,500 in the 1960s, and was well resourced. When the mine shut in the 1990s, almost the whole of the town became unemployed overnight. As people left for jobs elsewhere, numbers dropped to c.300 in 2010 and just 30 in 2017. From 2010 people reported a wide range of symptoms, but generally older people tended to have long periods sleeping and children to be hyperactive. Cases often occurred in clusters following social gatherings at which happier times were recalled. People did not want to move, but sickness gave a reason why they had to go, and then environmental poison was suggested as a cause for the sickness. Fears about poisoning from the mine were not put to rest despite negative soil and water tests but the government resettlement offer of a move to Esil was not  popular. Unhappy that often smaller accommodation was offered, people felt there was official pressure to move. 

Asia: The Hmong are an ethnic minority in Vietnam. Originally from China, which they had fled at the end of the 19th century to escape persecution, they were then recruited by the US for the Vietnam war; when the US abandoned Vietnam, many Hmong fled to the US as refugees. Within a year there was a high incidence of men dying overnight with no known cause. As illiterate immigrants, used to mountain life and polygamous kinship structure, they found it difficult to live in confined spaces, or to use modern appliances. Their belief systems already included death caused by evil spirits, as do other non-western cultures; but even in the west it is common for people to know of someone who has died within hours or days of a beloved life partner.

Cuba: In 2017 at a time when relations between Cuba and the US were still starting to settle, a group of recently deployed US State Department employees developed serious but unexplained medical problems: headaches, earaches, hearing impairment, dizziness, tinnitis, unsteadyness, visual disturbances, memory problems, difficulty concentrating and fatigue. Despite intensive investigations, no cause was established. All brain scans were normal. Experts were clear that a sonic weapon that could such symptoms did not exist, medical experts were clear that sound did not cause brain damage, but media interest prolonged the investigations. At the  time, relations between the countries were still strained and there was concern over spying, though no physical evidence was ever found.

Columbia: In 2014 a group of schoolgirls had faintings and convulsions that were diagnosed as 'mass hysteria'. Such outbreaks are typically gone in a day but this was still ongoing five years later. Blood tests, brain scans and EEG tests were all negative, but parents felt that some results were held back. Initially media  publicity led to public labelling of the girls as 'crazy', but the community view now is that the HPV vaccine caused it, and referring to supposed incidents in Japan and Italy. This is despite the vaccination being a second dose, the first being given a month previously and having caused no symptoms.

Korea: There is an illness called hwa-byung, meaning fire illness. The condition is referred to as a culture-bound syndrome or folk illness. While the main symptom is a sense of heat or burning all over the body, it also has a cultural meaning. Associated with stress caused by infidelity, it is an acceptable way of asking for support.

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Sunday, 3 April 2022

Reducing the Number of Premature Births

 At present there are few effective ways to prevent premature births. Such births increase the risk of death or disability in babies.

2022: The state of South Australia has now launched a screening programme that offers free blood tests to all pregnant women to identify and treat those who are low in omega-3. This is due to the findings of a recent research study led by Maria Makrides at the South Australian Health and Medical Research Institute, which investigated a possible link between low levels of the fatty acid omega-3 and premature birth. 

It is not clear why omega-3 fatty acids protect against preterm birth, but there is some evidence that it influences pre-labour changes to the cervix and contractions of the uterus.

  • The results of a trial of supplementation of omega-3 show that it is effective in reducing the risk of birth happening before 34 weeks of gestation by 77 per cent for women who started the trial with low levels of omega-3. 
  • However, the trial also showed that for those women who already had high levels of omega-3, the supplements actually increased the risk. 
  • This suggests that supplementation should only be recommended to women with  low omega-3 levels. However, Makrides says that multivitamins that contain small amounts of omega-3 are fine for women who already have high levels. 

Source: 'Omega-3 supplements could cut the number of pre-term births' by Alice Klein in New Scientist, 5th March 2022.

Some facts about prematurity.

  • In the UK, about eight in 100 babies will be born prematurely.
  • Premature babies, especially those born very early, often have complicated medical problems. The earlier the birth, the higher the risk of complications.
  • Most premature births occur in the late preterm (34 to 36 weeks of pregnancy).
  • Moderately preterm (32 to 34 weeks of pregnancy)
  • Very preterm (less than 32 weeks of pregnancy)
  • Extremely preterm (at or before 25 weeks of pregnancy).

Depending on how early the birth is, the following mild and more severe complications may be present at birth.

  • Small size with disproportionately large head and sharper looking, less rounded features due to lack of fat stores. Fine hair (lanugo) covering much of the body. 
  • Low body temperature, especially immediately after birth (hence the need for incubators).
  •  Difficulty breathing and lack of reflexes for sucking and swallowing, leading to feeding difficulties. 
  • Other problems occur with breathing, heart complications, brain bleeds, low blood pressure, gut problems, anaemia and newborn jaundice, and gut problems.

In the longer term, after birth other complications may occur: cerebral palsy, impaired learning, vision problems, hearing problems, dental problems, behavioural and psychological problems, developmental delays and chronic health issues.

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Sunday, 27 March 2022

Teenage Brains

 Blame my brain: the amazing teenage brain by Nicola Morgan. Walker Books, 2013.

The human brain contains about 100 billion nerve cells (neurons). Each neuron has a long tail-like part (axon) and many branches (dendrites). A neuron sends super-fast messages to other neurons by passing a tiny electrical current along its axon and across very tiny gaps (synapses) into the dendrites of other neurons. Every single thing you do - thought, action, sneeze, emotion - happens when the neurons send the right messages, very fast, through the complicated web of branches.

Every time you repeat an action, or thought, or recall the same memory, that same web is activated and the web of connections becomes stronger, and the better you are at that specific task. But if you don't use those connections again, they may die off and you forget a fact or a name, or how to do something. To relearn something, you need to rebuild the web of connections by practicing again. If someone has a brain injury (e.g. a stroke) they might need to relearn how to walk or speak.

At birth a human baby has almost all of its neurons but few dendrites and therefore few synapses connecting them - so can't do very much. But their brains develop fast with new dendrites and synapses, as they learn to recognise people, talk and walk. There are also critical periods in brain development. If you don't learn a foreign language before the age of about seven, you can still learn to speak it fluently but probably always speak with the wrong accent, having passed the age when the brain can pick up accents. But most skills can be picked up at any age.

One type of neuron is called a mirror neuron. These neurons fire up when we watch someone else do something. If we watch several times, it may be easier for us to do the same thing because we have watched someone else do it. And it might be these neurons that help us feel what other people are feeling (empathy).

It was thought that all important development takes place in the first three years of life, but now we know that: (1) We can grow more neurons after we are born. (2) The brain grows and develops even into later life. (3) While some neurons die, we sometimes grow new ones. Adolescence is a time of major change in the volume of grey matter in the brain, and some parts of the brain are affected more than others. Not all teenagers show this in their behaviour, but some do.

The part of the brain used for thinking, reasoning,  logic and decision making gets bigger mainly just before puberty (usually 11 to 12 years). But the pre-teen brain grows far too many connections and synapses, and during the teenage years these are cut back: dendrites that don't get used fall away and those that do get used get fewer and thicker.

Body clock: The adult human body clock is 'on' for for about 16 hours of the day when we are awake and it is difficult to sleep in this period. While babies need a lot of sleep, by the age of 9 or 10, we tend to have reached the adult pattern of eight hours of sleep. But research shows that teenagers need around nine hours, at the point they also stay up later - so they are not ready to wake at 7am. 

Sleep: If they are woken too early they risk losing REM (rapid eye movement) sleep which is particularly deep sleep, and seems to be important for memory and learning. Trying to catch up by sleeping more at weekends does not help the body clock and may even disrupt it further. And there is now evidence that the sleeping brain practises the things that you did when you were awake. And the brain is also changing physically by pruning some connections and strengthening others.

Risk taking: Surviving risks means the brain releases dopamine so activating the feelings of pleasure, otherwise we become lazy. But some people's brains are more geared to this than others and adolescents in general do take more risks. Also the pleasure reaction is often stronger than the rational (pre-frontal cortex) part of the brain that logically looks at the risks.  The need to impress friends is important for getting on in life, so teenagers often take different decisions when friends are present. And with puberty starting around 2 years earlier than 50 years ago, alcohol is more widely used, as are (increasingly stronger) drugs. 2013: Rates of sexually transmitted diseases have increased, almost a quarter of 15 year olds smoke regularly and a third have tried cannabis, and a fifth are classified as obese. And around 60% of teenage girls are on diets (often not healthy ones). But remember if a quarter of UK teens get drunk at least three time a month - three quarters don't. 

Female and male brains: [The following statements are averages and not everyone's brain behaves in the same way; the brains of some girls work more in a male way, and vice versa. and it's not about being homosexual or heterosexual.] Boys tend to be interested in technical details of (e.g. a mobile phone) and girls more in the appearance and how useful it is. Boys are more likely to be diagnosed with autism, lacking understanding of social skills and bonding mechanisms. However, this may be less so as if is now being recognised that girls can mask the symptoms of autism by copying behaviour to 'fit in'.

The male brain is typically 10% heavier than a female brain but female brains have a greater proportion of the information-processing grey matter. Women are less likely to have dyslexia, language difficulty, colour blindness, schizophrenia, ADHD, Tourette's and other brain disorders. In later life, men lose brain cells faster and are more likely to develop memory problems.

Sex Hormones: these are chemicals that affect many aspects of our lives. When a sperm fertilizes an egg, the resulting embryo always starts out female. During week 6 or 7 the sex hormones either turn  the embryo into a male (testosterone) or keeping it as female (oestrogen). Normal males will have a small amount of female hormones and females a small amount of male hormones. Hormone levels change during our lifetime and are especially active at puberty. They also change with the season and, for women, during the menstrual cycle.

Oestrogen: One effect of this hormone is to boost dopamine, which can make the world seem rosier, brighter but can also make it feel darker and sadder, and it can cause mood swings. But not all females have mood swings. And mood swings are not only causes by sex hormones. Boys have mood swings too.

Testosterone: Increased testosterone causes aggressive behaviour. Testosterone increases during and after intense sport, especially if you are on the winning side - and also if you are a spectator. Females with the condition 'congenital hyperplasia' have too much testosterone; they show more aggressive behaviour and better spatial skills - both of which are more common in males.

Learning: Different sexes may learn better with different teaching methods. For languages, some pupils (especially boys) may need the rules and grammar explained in a very structured way. In science subjects, some pupils (perhaps more often the girls) may need more rote learning, practical examples or a using comparisons or analogies.

Emotional behaviour: Girls start to use their pre-frontal cortex to control emotional behaviour sooner than boys, who may take longer to develop self-control.

Risk behaviour: Boys seem to take more risks and more dangerous ones - not wearing seat belts or helmets, driving while drunk, binge drink and drink heavily, use and deal drugs, smoke, fight and carry weapons, have sex before 13, overeat and so be overweight. Girls' risk taking is more often having sex when they hadn't intended to, fast or vomit to lose weight or avoid physical exercise.

Body changes: Girls start to look like women before boys start to look like men. This sometimes makes girls feel they are fat. Research using pictures shows that women think men like thinner women, while men didn't choose the same photos.

Developing early or late: Either is difficult for both sexes. Early development in girls creates an extra risk of early sex and alcohol addiction, depression, anxiety and eating disorders. For boys, while they may be more popular and given leadership roles, adults may expect them to be advanced in school work too which is unlikely as their frontal cortex is not mature.

Clumsiness: One the areas of the brain that grow the most in adolescence is the cerebellum, which is important in controlling large movements. However the brain may not have completely rewired itself as fast as the body growth. Stress can also cause clumsiness.

Social: Girls are likely to hit puberty just as they start secondary school, while boys have time to settle in before puberty starts. Both sexes may feel less comfortable with their other-sex parent and argue more with opposite sex siblings. It is thought that this is a biological way of preventing incest which can lead to deformities in offspring.

End