Convincing people not to smoke was one of the toughest PR challenges, but this one may be even more difficult. How do you persuade people not to eat so much and to eat the right kinds of foods? There are government and private communications urging the public to exercise more and ingest less, but the epidemic of overweight consumers continues and is climbing. I, for one, understand the difficulty of losing pounds once they are strapped on. It is next to impossible to get them off again and to keep them off. Millions of Americans face the same problem. The country needs a simple solution, communicated in depth over a long period of time, to control the epidemic of obesity. It needs to be as massive as the anti-smoking campaigns and as persuasive. Even so, it will take decades to work.