JACN Did you know that you can get alerts when a new issue is online?
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

This Article
Right arrow Figures Only
Right arrow Full Text
Right arrow Full Text (PDF)
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Lloyd, T.
Right arrow Articles by Cusatis, D. C.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Lloyd, T.
Right arrow Articles by Cusatis, D. C.
Journal of the American College of Nutrition, Vol. 19, No. 2, 256-261 (2000)
Published by the American College of Nutrition

Original Research

Bone Status among Postmenopausal Women with Different Habitual Caffeine Intakes: A Longitudinal Investigation

Tom Lloyd, PhD, Nan Johnson-Rollings, RN, MEd, Douglas F. Eggli, MD, Kessey Kieselhorst, RD, MPA, Elizabeth A. Mauger, PhD and Deborah Cardamone Cusatis, MD, PhD

Departments of Health Evaluation Sciences (T.L., N.J.-R., E.A.M., D.C.C.), Pennsylvania State College of Medicine and University Hospitals, Pennsylvania State Geisinger Health System, Milton S. Hershey Medical Center, Hershey, Pennsylvania
Radiology (D.F.E.), Pennsylvania State College of Medicine and University Hospitals, Pennsylvania State Geisinger Health System, Milton S. Hershey Medical Center, Hershey, Pennsylvania
Clinical Nutrition (K.K.), Pennsylvania State College of Medicine and University Hospitals, Pennsylvania State Geisinger Health System, Milton S. Hershey Medical Center, Hershey, Pennsylvania

Objective: Caffeine consumption has been proposed as a risk factor for bone loss in postmenopausal women. Past epidemiologic studies on caffeine and bone have been confounded by covariates including cigarette and alcohol use, differing levels of physical activity and hormone replacement therapy. The purpose of the study was to use a longitudinal design to determine the relationship between habitual dietary caffeine intake and postmenopausal bone status.

Methods: Data were collected at two time points separated by two years; 138 women with little or no exposure to tobacco or to drugs known to affect bone status were seen at Visit 1, and 112 returned for Visit 2. Ninety-two of these subjects had received no drugs known to affect bone status over the two-year interval and were kept in the sample. Nutrient and caffeine intake were assessed from three-day diet records. Bone measurements were made by dual energy x-ray absorptiometry (DXA).

Results: Correlation analyses indicated no association between dietary caffeine intake and total body or femoral neck bone density or bone mass. Similarly, no associations were found between caffeine consumption and longitudinal changes in total body or femoral neck bone measurements. These results held true both with and without statistical adjustment for calcium intake.

Conclusions: This study does not support the idea that caffeine is a risk factor for bone loss in healthy postmenopausal women.

Key words: caffeine, calcium, bone loss, postmenopausal women, longitudinal studies






HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 2000 by the American College of Nutrition.