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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: How to Wreck Your Heart

These unhealthy habits can put your heart at risk.

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Healthy Recipe Finder

Browse our collection of healthy, delicious recipes, from WebMD and Eating Well magazine.

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Ensure you're exercising hard enough to get a good workout, but not strain your heart.

While you are exercising, you should count between...