Sugar and your skin
A recent study comparing high levels of glucose in the blood and how old the subjects appeared. The older people appeared to be - on average it was five months older than they actually were - seemed to correlate with a high rate of blood sugar. The reason is that glucose attacks collagen and makes skin more brittle.
Michael Mosley in Radio Times, October 2013
High Fructose Corn Syrup
This is sweeter than sugar and interferes with leptin, a hormone that has a key role in controlling appetite.
Sugar and heart attacks
Sugar is a higher risk factor than fat for cardiac disease. So avoid low fat products as these typically contain higher levels of sugar to compensate for the lower fat content.
Fructose
Fructose is easily converted to fat in the body. When the liver is overloaded with sugars, leptin (the hunger controlling hormone) simply stops working, so the body doesn't recognise that it is full.