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Arch Intern Med. 2008;168(19):2163-2164.

	Since this article does not have an abstract, we have provided the first 150 words of the full text and any section headings.

Telomere shortening has been considered an aging marker since it represents lifetime exposure to oxidative and inflammatory stress, and it has been shown to be negatively correlated with age, smoking, and mortality up to age 75 years.¹ A recent article in the Archives² reported that the benefits of leisure activity include an association with longer telomere length in middle-aged subjects, after adjusting for confounding factors such as body mass index, smoking, and socioeconomic status, sending a potentially powerful message that regular exercise has antiaging effects. We report a study in an elderly Chinese population 65 years and older that suggests that by age 70 years, this beneficial effect on telomere length is much attenuated.

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Four thousand men and women 65 years and older living in the community participated in a health survey between 2001 and 2003. Information was collected regarding self-perceived ranking of social status in terms of income, education, . . . [Full Text of this Article]

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