The last of four programmes What Makes Some People Fat?
We spend millions of pounds a year on crash diets and slimming aids to try and beat the battle of the bulge. Despite this Britain is a nation of fatties - by the age of 50 half of us need to lose weight. Why - is it gluttony or greed? Or could it be linked to lifestyle and the typical high-fat, low-fibre food we eat - the same food which has been linked to killer diseases such as cancer and coronary heart disease.