Vitamin D and Infertility: The Evidence

Vitamin D is a lipid soluble vitamin synthesized by the skin upon exposure to UV light. Approximately 10–20% of vitamin D comes from dietary sources and 25OH-D is its circulating form. Vitamin D receptors are found in reproductive tissues including ovary, uterus, and endometrium permitting investiga...

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Main Author: Mark D. Hornstein
Format: Article
Language:English
Published: World Scientific Publishing 2019-03-01
Series:Fertility & Reproduction
Subjects:
Online Access:http://www.worldscientific.com/doi/epdf/10.1142/S266131821950004X
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author Mark D. Hornstein
author_facet Mark D. Hornstein
author_sort Mark D. Hornstein
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description Vitamin D is a lipid soluble vitamin synthesized by the skin upon exposure to UV light. Approximately 10–20% of vitamin D comes from dietary sources and 25OH-D is its circulating form. Vitamin D receptors are found in reproductive tissues including ovary, uterus, and endometrium permitting investigators to hypothesize a role for vitamin D in reproduction. Indeed, a number of animal studies provide evidence of vitamin D’s importance in fertility. Studies in humans, however, generally have not supported an effect of vitamin D on fertility outcomes. Several retrospective cohort studies did not demonstrate an association between vitamin D levels and pregnancy. Similarly, one study did not find correlation between anovulatory infertility and vitamin D intake. Very low levels of vitamin D, however, were associated with miscarriage in another study. A large meta-analysis of 11 studies and 2700 women did show an improvement in IVF success rates in those with higher levels of vitamin D. Finally, two small studies on vitamin D supplementation and pregnancy did not show a benefit of increasing vitamin D intake. In conclusion, the literature at best shows a minimal impact of vitamin D on infertility and IVF outcomes.
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spelling doaj.art-6f21404d1d1b435099aa6872f86fd33a2022-12-21T23:04:43ZengWorld Scientific PublishingFertility & Reproduction2661-31822661-31742019-03-0111313310.1142/S266131821950004X10.1142/S266131821950004XVitamin D and Infertility: The EvidenceMark D. Hornstein0Department of Obstetrics and Gynecology, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USAVitamin D is a lipid soluble vitamin synthesized by the skin upon exposure to UV light. Approximately 10–20% of vitamin D comes from dietary sources and 25OH-D is its circulating form. Vitamin D receptors are found in reproductive tissues including ovary, uterus, and endometrium permitting investigators to hypothesize a role for vitamin D in reproduction. Indeed, a number of animal studies provide evidence of vitamin D’s importance in fertility. Studies in humans, however, generally have not supported an effect of vitamin D on fertility outcomes. Several retrospective cohort studies did not demonstrate an association between vitamin D levels and pregnancy. Similarly, one study did not find correlation between anovulatory infertility and vitamin D intake. Very low levels of vitamin D, however, were associated with miscarriage in another study. A large meta-analysis of 11 studies and 2700 women did show an improvement in IVF success rates in those with higher levels of vitamin D. Finally, two small studies on vitamin D supplementation and pregnancy did not show a benefit of increasing vitamin D intake. In conclusion, the literature at best shows a minimal impact of vitamin D on infertility and IVF outcomes.http://www.worldscientific.com/doi/epdf/10.1142/S266131821950004Xvitamin dinfertilityin vitro fertilizationassisted reproductive technologies
spellingShingle Mark D. Hornstein
Vitamin D and Infertility: The Evidence
Fertility & Reproduction
vitamin d
infertility
in vitro fertilization
assisted reproductive technologies
title Vitamin D and Infertility: The Evidence
title_full Vitamin D and Infertility: The Evidence
title_fullStr Vitamin D and Infertility: The Evidence
title_full_unstemmed Vitamin D and Infertility: The Evidence
title_short Vitamin D and Infertility: The Evidence
title_sort vitamin d and infertility the evidence
topic vitamin d
infertility
in vitro fertilization
assisted reproductive technologies
url http://www.worldscientific.com/doi/epdf/10.1142/S266131821950004X
work_keys_str_mv AT markdhornstein vitamindandinfertilitytheevidence