Despite recent evidence that people are exercising more, about 26% of Americans are obese and more than 36% are considered overweight as measured by BMI, a Gallup poll indicates. The findings are based on a survey that asked 350,000 people for their heights and weights. Income, age and ethnicity played a role in obesity rates, researchers said. Obesity has been increasingly recognized as a serious health concern both in the United States and abroad.

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