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Extremely obese people — those who are 80 or more pounds over a normal weight — live three to 12 fewer years than their normal-weight peers, a new study shows.Just being overweight or moderately obese, however, has little or no effect on life span, the research found. The finding adds to the growing body of evidence that being slightly overweight may have no influence on life expectancy, but being severely overweight trims years off people's lives.
Lead author Eric Finkelstein says being moderately overweight may not affect people's life span because there are so many effective treatments to manage the health problems that often come with extra pounds, such as high cholesterol, high blood pressure and diabetes.