Overweight

Teens who incorrectly think they're on the heavy side are more likely to be obese as young adults, according to a new study.

• By Nathan Collins

Women who got menu ideas from such programs had a higher BMI than those who did not.

• By Tom Jacobs

The American Medical Association has officially labeled obesity a disease, but we still don't know enough about the problem to be sure it fits the established definition.

• By Michael S. Fenster