Worried about obese kids? Let them set meal portion

Want your children to eat less? Let them serve themselves. They probably won't dole out a supersize portion on their own.

Or pour drinks into tall, narrow glasses rather than short, wide ones; they'll think they are getting more (so will you).

With Americans spending billions of dollars a year on fat-loss techniques ranging from celebrity diets to stomach-stapling surgery, the relatively new field of behavioral nutrition examines more down-to-earth questions.  Click here for full article.