Journal article
Prospective study of dietary protein intake and risk of hip fracture in postmenopausal women
The American journal of clinical nutrition, Vol.69(1), pp.147-152
01/01/1999
DOI: 10.1093/ajcn/69.1.147
PMID: 9925137
Abstract
Background
The role of dietary protein intake in osteoporosis remains controversial. Protein is an important structural component of bone and protein supplementation improves the medical outcome of hip fracture patients, but it is unknown whether protein intake can reduce the incidence risk of hip fracture.
Objective
The relation between intake of protein and other nutrients and subsequent incidence of hip fracture was evaluated.
Design
Nutrient intake was assessed with a food-frequency questionnaire in a cohort of Iowa women aged 55–69 y at baseline in 1986. Incident hip fractures were ascertained through follow-up questionnaires mailed to participants in 1987 and 1989 and verified by physician reports.
Results
Forty-four cases of incident hip fractures were included in the analyses of 104338 person-years (the number of subjects studied times the number of years of follow-up) of follow-up data. The risk of hip fracture was not related to intake of calcium or vitamin D, but was negatively associated with total protein intake. Animal rather than vegetable sources of protein appeared to account for this association. In a multivariate model with inclusion of age, body size, parity, smoking, alcohol intake, estrogen use, and physical activity, the relative risks of hip fracture decreased across increasing quartiles of intake of animal protein as follows: 1.00 (reference), 0.59 (95% CI: 0.26, 1.34), 0.63 (0.28, 1.42), and 0.31 (0.10, 0.93); P for trend = 0.037.
Conclusion
Intake of dietary protein, especially from animal sources, may be associated with a reduced incidence of hip fractures in postmenopausal women.
Details
- Title: Subtitle
- Prospective study of dietary protein intake and risk of hip fracture in postmenopausal women
- Creators
- Ronald G Munger - #N# From the Department of Nutrition and Food Sciences, Utah State University, Logan, and the Department of Preventive Medicine and Environmental Health, University of Iowa College of Medicine, Iowa City.James R Cerhan - University of IowaBrian C-H Chiu - #N# From the Department of Nutrition and Food Sciences, Utah State University, Logan, and the Department of Preventive Medicine and Environmental Health, University of Iowa College of Medicine, Iowa City.
- Resource Type
- Journal article
- Publication Details
- The American journal of clinical nutrition, Vol.69(1), pp.147-152
- DOI
- 10.1093/ajcn/69.1.147
- PMID
- 9925137
- ISSN
- 0002-9165
- eISSN
- 1938-3207
- Language
- English
- Date published
- 01/01/1999
- Academic Unit
- Epidemiology
- Record Identifier
- 9984368222102771
Metrics
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