Obesity and Small Changes

Tara Parker-Pope's health blog in the Times discusses small changes in diet (and exercise), referencing recent commentary in JAMA. The main point is that it's unlikely changing habits by a small amount, like eating one less cookie a day, would have much of an effect on obesity trends. Rather, larger changes more like 5-10 times as weighty (pardon the pun), are on the right scale. I'll be the first to drop my 10-cookie-a-day habit.