Adiposity as compared with physical activity in predicting mortality among women.

Published on Dec 23, 2004in The New England Journal of Medicine70.67
· DOI :10.1056/NEJMoa042135
Frank B. Hu205
Estimated H-index: 205
(Harvard University),
Barry M. Popkin323
Estimated H-index: 323
(Harvard University)
+ 3 AuthorsJoAnn E. Manson235
Estimated H-index: 235
(Harvard University)
Background Whether higher levels of physical activity can counteract the elevated risk of death associated with adiposity is controversial. Methods We examined the associations of the body-mass index and physical activity with death among 116,564 women who, in 1976, were 30 to 55 years of age and free of known cardiovascular disease and cancer. Results During 24 years of follow-up, 10,282 deaths occurred — 2370 from cardiovascular disease, 5223 from cancer, and 2689 from other causes. Mortality rates increased monotonically with higher body-mass-index values among women who had never smoked (P for trend <0.001). In combined analyses of all participants, adiposity predicted a higher risk of death regardless of the level of physical activity. Higher levels of physical activity appeared to be beneficial at all levels of adiposity but did not eliminate the higher risk of death associated with obesity. As compared with women who were lean (i.e., they had a body-mass index lower than 25) and active (they spent ...
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