Once you are overweight, chances are you will stay so.

The best policy is to prevent becoming overweight.
Rebecca Hardy, from the MRC: "a few lose weight but very few get back to normal. The best policy is to prevent people becoming overweight." Once people start to pile on the pounds in middle age their weight tends to continue "relentlessly upwards", according to a long-term study of 25,000 men and women. Source Telegraph.co.uk