| Literature DB >> 3407686 |
M M Hreshchyshyn1, A Hopkins, S Zylstra, M Anbar.
Abstract
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.Entities:
Keywords: Americas; Biology; Birth History; Breast Feeding; Calcium; Contraception; Contraceptive History; Contraceptive Methods; Contraceptive Usage; Demographic Factors; Developed Countries; Family Planning; Fertility; Fertility Measurements; Health; Infant Nutrition; Ingredients And Chemicals; Inorganic Chemicals; Lactation; Maternal Physiology; Metals; Methodological Studies; New York; North America; Northern America; Nutrition; Oral Contraceptives; Parity; Physiology; Population; Population Dynamics; Pregnancy History; United States
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Year: 1988 PMID： 3407686 DOI： 10.1016/s0002-9378(88)80075-9
Source DB: PubMed Journal: Am J Obstet Gynecol ISSN： 0002-9378 Impact factor: 8.661