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Article
A Prospective-Study of Bone-Mineral Content and Fracture in Communities with Differential Fluoride Exposure
American Journal of Epidemiology
  • M. R. Sowers
  • M. Kathleen Clark, University of Iowa
  • M. L. Jannausch
  • R. B. Wallace
Document Type
Article
Peer Reviewed
1
Publication Date
1-1-1991
NLM Title Abbreviation
Am J Epidemiol
PubMed ID
2018020
Abstract

In 1983/1984, a study of bone mass and fractures was begun in 827 women aged 20-80 years in three rural Iowa communities selected for the fluoride and calcium content of their community water supplies. The control community's water had a calcium content of 67 mg/liter and a fluoride content of 1 mg/liter. The higher-calcium community had water with a calcium content of 375 mg/liter and a fluoride content of 1 mg/liter. The higher-fluoride community's water had 15 mg/liter of calcium and 4 mg/liter of fluoride naturally occurring. In 1988/1989, a follow-up study characterized the 684 women still living and available for study. Residence in the higher-fluoride community was associated with a significantly lower radial bone mass in premenopausal and postmenopausal women, an increased rate of radial bone mass loss in premenopausal women, and significantly more fractures among postmenopausal women. There was no difference in the 5-year relative risk of any fracture in the higher-calcium community versus the control community; however, the relative risk was 2.1 (95% confidence interval (CI) 1.0-4.4) in women in the higher-fluoride community compared with women in the control community. There was no difference in the 5-year risk of wrist, spine, or hip fracture in the higher-calcium community versus the control community; however, the 5-year relative risk for women in the higher-fluoride community, compared with women in the control community, was 2.2 (95% Cl 1.1-4.7). Estimates of risk were adjusted for age and body size.

Published Article/Book Citation
American Journal of Epidemiology, 133:7 (1991) pp.649-660.
Disciplines
Citation Information
M. R. Sowers, M. Kathleen Clark, M. L. Jannausch and R. B. Wallace. "A Prospective-Study of Bone-Mineral Content and Fracture in Communities with Differential Fluoride Exposure" American Journal of Epidemiology Vol. 133 Iss. 7 (1991) p. 649 - 660 ISSN: 0002-9262
Available at: http://works.bepress.com/m_clark/10/