Vitamin D and Fertility

Vitamin D also plays an integral part in reproduction. In women, vitamin D supplementation can drastically increase pregnancy sucesss rate. In men, loading up on vitamin D has beneficial effects on sperm quality and quantity. A growing body of clinical evidence supports the many benefits of vitamin D on various fertility markers:
1. Several high quality studies suggest that vitamin D deficiency is strongly linked with infertility in both men and women. [890-910]
2. Vitamin D deficiency also increases the risk of serious pregnancy complications, such as preeclampsia (characterized by hypertension, protein in the urine, and swelling), miscarriage, and preterm birth. [911-912]
3. In women with polycystic ovary syndrome (PCOS), vitamin D supplementation normalizes ovulation by increasing sensitivity to follicle-stimulating hormone, which promotes the formation of egg or sperm. [913]
4. In women with vitamin D deficiency, supplementation improves the ovarian reserve and delays the onset of menopause. [914]
5. Patients with high initial vitamin D levels have better chance for successful in vitro fertilization (IVF) compared to those with low vitamin D levels. [915-920]
6. Vitamin D supplementation during pregnancy is associated with increased mean birth weight and reduced risk of small for gestational age birth. [921-922]
7. Vitamin D supplementation during pregnancy improves maternal and fetal outcomes. [923-924]
8. In pregnant women, vitamin D supplementation helps maintain a healthy pregnancy by reducing the risk of preeclampsia. [925]
9. Vitamin D improves female fertility by aiding in the development of the uterus and implantation. [926-933]
10. Vitamin D supplementation in men is associated with increased sperm survival. [934-935]
11. In men, vitamin D supplementation improves sperm motility (ability of sperm to move properly through the female reproductive tract to reach the egg). [936]
12. In men with low sperm count, vitamin D supplementation signifcanlty increases the chance of getting their partners pregnant by improving semen quality and quantity. [937-940]