Abstract
Objective
The goal of this study was to examine the purported effects of calcium on modulating
body weight.
Design
Retrospective data was used to assess the relationship between calcium intake and
weight change over an 8- to 12-year period among middle-aged adults.
Subjects
Participants were 10,591 men and women aged 53 to 57 years recruited during 2000-2002.
Statistical Analysis
Linear regression was used to model associations of 10-year weight change and calcium
intake, adjusted for weight at age 45 years, energy intake, physical activity, and
other factors.
Results
Calcium intake was associated with 10-year weight change only in women. Women with
current calcium supplement dose of >500 mg/day had a 10-year weight gain of 5.1 kg
(95% confidence interval 4.7 to 5.5) compared to 6.9 kg (95% confidence interval 6.5
to 7.4) among nonusers (P for trend=0.001). Trends were similar for total calcium intake from diet plus supplements
(P for trend=0.001). Dietary calcium alone had no significant effect on 10-year weight
change.
Conclusions
Increasing total calcium intake, in the form of calcium supplementation, may be beneficial
to weight maintenance, especially in women during midlife.
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Biography
A. J. Gonzalez is a graduate research assistant, Fred Hutchinson Cancer Research Center, Public Health Sciences, Seattle, WA, and the Department of Epidemiology, School of Public Health and Community Medicine, University of Washington, Seattle
Biography
E. White and A. Kristal are professors, Fred Hutchinson Cancer Research Center, Public Health Sciences, Seattle, WA, and the Department of Epidemiology, School of Public Health and Community Medicine, University of Washington, Seattle
Biography
A. J. Littman is a postdoctoral fellow, Fred Hutchinson Cancer Research Center, Public Health Sciences, Seattle, WA, and the Department of Epidemiology, School of Public Health and Community Medicine, University of Washington, Seattle
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© 2006 American Dietetic Association. Published by Elsevier Inc. All rights reserved.
