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What is the changing impact of obesity on the active life expectancy of older Americans?

According to a study published in *The Journals of Gerontology*, while obesity rates among older Americans have increased markedly over time, active life expectancy has still expanded for this population. This reveals a complex and changing impact of obesity on the active life expectancy of older Americans, where the relationship between weight, disability, and longevity is evolving due to medical and lifestyle changes.