If you're looking into weight-loss programs, the best one is both the easiest and the hardest: Change your lifestyle.
"People should not go on a weight-loss program," says Keri M. Gans, RD, CDN, a nutrition consultant in New York City and a spokeswoman for the American Dietetic Association. "They should develop healthy eating habits. The problem with a program is people feel they can go off at any time. If you instead change your lifestyle and how you approach food, then you're looking at a long-term plan for health."