Associations between endogenous sex hormone levels and mammographic and bone densities in premenopausal women

M Yong, C Atkinson, KM Newton, EJA Bowles, FZ Stanczyk, KC Westerlind, VL Holt, SM Schwartz, WM Leisenring, JW Lampe

Research output: Contribution to journalArticle (Academic Journal)peer-review

22 Citations (Scopus)

Abstract

PURPOSE: Mammographic breast and bone mineral densities (BMD) have been associated with luteal phase hormone concentrations in premenopausal women. We assessed the associations of breast and bone densities with follicular phase hormones and sex hormone binding globulin (SHBG) in premenopausal women, given that follicular phase hormones have been shown to be positively associated with premenopausal breast cancer risk. METHODS: One hundred and ninety-two 40-45-year-old women provided a spot urine and/or blood sample during the follicular phase. Hormone and SHBG concentrations, and bone density were measured and routine mammograms were accessed and digitized to obtain breast density measures. Regression models were fit to assess the associations between hormones and SHBG, and breast and bone densities. RESULTS: Positive associations were observed between percent breast density and SHBG (p trend = 0.02), as well as estradiol (p trend = 0.08), after controlling for body mass index (BMI), number of pregnancies, and breast feeding history. In addition, a statistically significant inverse association was observed between total testosterone and head BMD (p trend = 0.01), after controlling for BMI. CONCLUSIONS: Associations were observed between breast and bone densities, and serum hormone concentrations during the follicular phase of the menstrual cycle.
Translated title of the contributionAssociations between endogenous sex hormone levels and mammographic and bone densities in premenopausal women
Original languageEnglish
Pages (from-to)1039 - 1053
Number of pages15
JournalCancer Causes and Control
Volume20
DOIs
Publication statusPublished - Mar 2009

Bibliographical note

Publisher: Kluwer Academic Publishers

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