Protein supplements (shakes, powders and confectionery bars). Unless you are an elite athlete or seriously mal-nourished, a protein supplement is unlikely to give you any kind of boost. Why? Whenever we exercise, we are triggering our body to adapt to the strains we place on it. Our body builds muscle, improves heart strength and circulation and enhances lung capacity over many weeks and months. Between workouts, the body repairs and strengthens muscles, using nutrients, especially the protein, in our diet to do so.
For many years it was thought that eating high levels of protein would enhance such muscle development, but new research shows this is not true and eating too much protein simply overloads the system. Eating more protein than needed forces the body to expel the excess in our urine. Research also shows that too mcuh protein could increase cancer risk and lower life expectancy.
All we need is a balanced diet. A male athlete needs 90g of protein a day (slightly less for a woman): easily achieved in a normal diet with a cup of yoghurt at breakfast, some tuna at lunchtime and a chicken fillet for dinner.
As well as being unnecessary, pre-made protein bars and drinks often have sugar added, so adding unwanted calories to your day's energy intake. So you easily end up piling on the pounds.
Dr Stuart Farrimond in
Wiltshire Times, March 2014