>
> According to Gina Kolata's latest book -- Rethinking Thin: The New
> Science of Weight Loss--and the Myths and Realities of Dieting -- Not
> even exercise and reduced calories will help in the long run. The
> body will force you to readjust to the new weight by slowing down your
> metabolism until you gain back the weight. Essentially her argument
> is that practically _all_ scientific studies show that people have a
> rate range of about 20 pounds and that range cannot be changed by
> dieting and exercise. She is not saying that this range is genetic --
> though that is part of it --- but apparently factors like if your
> mother smoked while she was pregnant and whether your mother was
> restricted in her calorie intake while you were pregnant are huge
> factors in obesity.