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Am J Epidemiol 2002; 156:125-126.
Copyright © 2002 by the Johns Hopkins Bloomberg School of Public Health

ORIGINAL CONTRIBUTIONS

Sternfeld et al. Respond to: "Body Composition in Studies of Aging"

Barbara Sternfeld1, Long Ngo2, William A. Satariano2 and Ira B. Tager2

1 Division of Research, Kaiser Permanente Medical Care Program, Oakland, CA.
2 Division of Epidemiology, School of Public Health, University of California at Berkeley, Berkeley, CA.

Received for publication April 10, 2002; accepted for publication May 8, 2002.

The first 10% of the full text of this article appears below.


   INTRODUCTION
 
Dr. Harris articulates several important issues regarding the study of health effects of body composition in the elderly population (1). First is the hypothesis that the separate elements of body composition (i.e., bone, lean mass, and fat) may have differential relations with specific health outcomes. For instance, low bone density may be a risk factor for fracture, but not for osteoarthritis or atherosclerosis, while a high level of fat may have the opposite relations. The purpose of our study, reported in this issue of the Journal (2), was to test this hypothesis, specifically that a lower level of lean mass, but not a higher level of fat, . . . [Full Text of this Article]


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