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Review
. 2018 Mar;7(3):R95-R113.
doi: 10.1530/EC-18-0009. Epub 2018 Feb 15.

Vitamin D, PCOS and androgens in men: a systematic review

Christian Trummer  1 , Stefan Pilz  1 , Verena Schwetz  1 , Barbara Obermayer-Pietsch  1 , Elisabeth Lerchbaum  2
Affiliations
Review

Vitamin D, PCOS and androgens in men: a systematic review

Christian Trummer et al. Endocr Connect. 2018 Mar.

Abstract

Background: Accumulating evidence from animal and human studies suggests that vitamin D is involved in many functions of the reproductive system in both genders.

Aim: The aim of this review was to provide an overview on the effects of vitamin D on polycystic ovary syndrome (PCOS) in women and androgen metabolism in men.

Methods: We performed a systematic literature search in PubMed for relevant English language publications published from January 2012 until September 2017.

Results and discussion: The vitamin D receptor and vitamin D-metabolizing enzymes are found in reproductive tissues of women and men. In women, vitamin D status has been associated with several features of PCOS. In detail, cross-sectional data suggest a regulatory role of vitamin D in PCOS-related aspects such as ovulatory dysfunction, insulin resistance as well as hyperandrogenism. Moreover, results from randomized controlled trials (RCTs) suggest that vitamin D supplementation may be beneficial for metabolic, endocrine and fertility aspects in PCOS. In men, vitamin D status has been associated with androgen levels and hypogonadism. Further, there is some evidence for a favorable effect of vitamin D supplementation on testosterone concentrations, although others failed to show a significant effect on testosterone levels.

Conclusion: In summary, vitamin D deficiency is associated with adverse fertility outcomes including PCOS and hypogonadism, but the evidence is insufficient to establish causality. High-quality RCTs are needed to further evaluate the effects of vitamin D supplementation in PCOS women as well as on androgen levels in men.

Keywords: polycystic ovary syndrome; randomized controlled trial; systematic review; testosterone; vitamin D.

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References

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