Associations of parity, breast-feeding, and birth control pills with lumbar spine and femoral neck bone densities

The relationships between parity, breast-feeding, and the use of birth control pills and the bone densities of the lumbar spine and the femoral neck, measured by dual-photon densitometry, were studied in normal women. Femoral neck density was found to decrease by 1.1% per live-birth, whereas lumbar...

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Bibliographic Details
Published in:American journal of obstetrics and gynecology Vol. 159; no. 2; p. 318
Main Authors: Hreshchyshyn, M M, Hopkins, A, Zylstra, S, Anbar, M
Format: Journal Article
Language:English
Published: United States 01.08.1988
Subjects:
Adult
Aged
Aged, 80 and over
Breast Feeding
Contraceptives, Oral - administration & dosage
Densitometry - methods
Female
Femur Neck - anatomy & histology
Humans
Lumbar Vertebrae - anatomy & histology
Middle Aged
Minerals
Parity
Time Factors
Americas
Calcium
Lactation
Contraceptive History
United States
Contraceptive Usage
Metals
Breast Feeding
Biology
Inorganic Chemicals
North America
Fertility
Fertility Measurements
Contraceptive Methods
Population
Physiology
Oral Contraceptives
Birth History
Demographic Factors
Parity
New York
Nutrition
Health
Methodological Studies
Contraception
Family Planning
Maternal Physiology
Northern America
Developed Countries
Pregnancy History
Infant Nutrition
Ingredients And Chemicals
Population Dynamics
ISSN:0002-9378
Online Access:Get more information
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Summary:The relationships between parity, breast-feeding, and the use of birth control pills and the bone densities of the lumbar spine and the femoral neck, measured by dual-photon densitometry, were studied in normal women. Femoral neck density was found to decrease by 1.1% per live-birth, whereas lumbar spine density showed no significant association with parity. Breast-feeding was found to increase lumbar spine density by 1.5% per breast-fed child, whereas femoral neck density was not significantly correlated. No significant relationships between the use of birth control pills and the bone densities were found.
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ISSN:0002-9378
DOI:10.1016/S0002-9378(88)80075-9