• Hunger Hormone Study Sheds Light on Obesity

      For a while, experts have known there's a genetic component to obesity -- but a new study helps explain how it works.

    • FDA approves obesity pill Belviq for obese, overweight people

      The obesity pill Belviq (lorcaserin) has been approved by the U.S. Food and Drug Administration to be used in conjunction with diet and exercise as a weight management treatment option.

    • FDA Approves New Diet Drug, Belviq

      The FDA approved the first new presciption diet drug in more than a decade, called Belviq. Dr. Louis Aronne, director of the Comprehensive Weight Control Program at New York Presbyterian-Weill Cornell Medical Center, talks to Charlie Rose, Gayle King and Erica Hill about the drug's promise.

    • Carnie Wilson Discusses Her Weight Loss Surgery

      Singer Carnie Wilson told TODAY's Ann Curry she has a new outlook on life after her second weight-loss surgery, "I needed to take action... This is about health, it's not about what I look like or what the scale says."

    • Diet Discovery: Hormones

      Researchers uncover how the body can make it harder to lose weight.

    • Big Bucks Bulge Battle

      CNBC presents: Weight-loss initiatives, with David Kirchhoff, Weight Watchers International and Dr. Louis Aronne, Weight Control Program.

    • Are Biggest Losers Real?

      Joy Bahar is joined by Dr. Louis Aronne to discuss whether the results for"Biggest Loser" contestants are realistic.

    • Living with Obesity

      Scott Frank has lived with obesity since childhood and his career revolves around food. But he is now managing to lose weight thanks in part to a recent change in his type 2 diabetes medication.

    • Is Obesity Contageous?

      Research suggests that it may spread through a virus.

    • Dr. Aronne on The Skinny

      Dr. Aronne talks with ABC News about his book, The Skinny.

    • Oprah's Weight Gain

      Putting Oprah's weight gain in perspective