Serum vitamin D and sex hormones levels in men and women: The Multi-Ethnic Study of Atherosclerosis (MESA)

Di Zhao, Pamela Ouyang, Ian H. de Boer, Pamela L. Lutsey, Youssef M K Farag, Eliseo Guallar, David S. Siscovick, Wendy S Post, Rita R. Kalyani, Kevin Lenuell Billups, Erin Donnelly Michos

Research output: Contribution to journalArticle

Abstract

Introduction 25-hydroxyvitamin D [25(OH)D] deficiency has been associated with low testosterone levels in men, but there are conflicting reports of its associations with sex hormones in women. Less is known about whether these associations are independent of adiposity and lifestyle factors, and whether they differ by race/ethnicity. Aim To examine associations of 25(OH)D concentrations with sex hormone levels. Methods Cross-sectional analysis of 3017 men and 2929 women in a multi-ethnic cohort. Main outcome measures Testosterone, estradiol, dehydroepiandrosterone (DHEA), sex hormone binding globulin (SHBG), and free testosterone. Results The mean (SD) levels of 25(OH)D in men and women were 25.7(10.4) and 26.1(12.0) ng/ml, respectively. In men, after adjusting for demographic and lifestyle variables, a 10 ng/ml [25 nmol/L] decrease in 25(OH)D was associated with an average difference of −0.70 nmol/L (95%CI −1.36, −0.05) in SHBG and 0.02 percent (0.01, 0.04) in free testosterone, but was not associated with low total testosterone level (<10.41 nmol/L). In women, a 10 ng/ml decrease in 25(OH)D levels was associated with an average difference of −0.01 nmol/L (−0.01, −0.00) for estradiol, −8.29 nmol/L (−10.13, −6.45) for SHBG, 0.06 percent (0.04, 0.07) for free testosterone, and 0.40 nmol/L (0.19, 0.62) for DHEA. There was no significant interaction by race/ethnicity. Conclusions Lower 25(OH)D concentrations were associated with lower SHBG levels and higher free testosterone levels in both men and women, and lower estradiol and higher DHEA levels in women, independent of adiposity and lifestyle. We observed no significant association of 25(OH)D with total testosterone in men. Future studies are needed to determine whether vitamin D supplementation influences sex hormone levels.

Original languageEnglish (US)
Pages (from-to)95-102
Number of pages8
JournalMaturitas
Volume96
DOIs
Publication statusPublished - Feb 1 2017

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Keywords

  • Dehydroepiandrosterone
  • Estradiol
  • Sex hormone binding globulin
  • Sex hormones
  • Testosterone
  • Vitamin D

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Obstetrics and Gynecology

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