Vitamin D and Fertility

Vitamin D

Vitamin D is vital for proper body functioning. Besides playing a key role in calcium and phosphorus metabolism in the body, it has a major impact on the fertility in both males and females. Recent animal studies have implicated vitamin D as a major regulator of fertility. This is why maintaining the levels of vitamin D in the body through diet, sunlight and supplements is imperative.
vitamin d and fertility

How Does Vitamin D Affect Fertility in Women?

pregThe receptors for Vitamin D are found in a lot of places in the human body. Receptors are the channels by which vitamin D exerts its effects on the body. In females, vitamin D receptors are found in the uterus, placenta, and the ovaries.

  • When calcitriol (the activated form of vitamin D) binds to the receptors, it helps control, the genes involved in the production of estrogen (the female hormone). It regulates the production of two key fertility hormones in females-estrogen and progesterone.
  • Calcitriol controls the genes involved in implantation of the fertilized egg in the uterus.
  • During pregnancy, the uterus and placenta make calcitriol to strengthen the immunity and to ward off the infections.
  • Women with high vitamin D levels are more likely to get pregnant after receiving in vitro fertilization (IVF) therapy (assisted conception method) as compared to the women who are vitamin D deficient.
  • Vitamin D is known to play a causative role in polycystic ovarian syndrome (PCOS).
  • Vitamin D supplementation improves menstrual irregularities.
  • It also regulates ovulation and thereby, the chances of getting pregnant.

The Impact of Vitamin D on Fertility in Men

fertilityReceptors for vitamin D exist in the testes and sperms in males.

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