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    A person is considered obese when his or her weight is 20% or more above normal weight or his or her body mass index (BMI) is over 30. "Morbid obesity" means that a person is more than 100 pounds over normal weight or has a BMI of 40 or higher. Follow the links below to find WebMD's comprehensive coverage about obesity, its causes, treatment, and much more.

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    Thumbnail: 12 Tips to Lose the Weight for Good

    Feel like you’ve tried every diet trick in the book? Here are 12 new weight-loss strategies to try.

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