Influence of Serum Vitamin D Levels on Embryo Morphokinetic Parameters in Women Undergoing Controlled Ovarian Hyperstimulation

Up to date there are few studies questioning the serum Vitamin D deficiency as a negative factor for pregnancy rates in women undergoing COH cycles and also are displaying different and inconclusive results. This dedicated negative affects may be mediated through endometrial and/or ovarial factors. In experimental animal models Vitamin D receptors have been found in endometrium and ovaries and deficient levels might have been a cause of impaired folliculogenesis. In one of human study Vitamin D has been suggested as a positive regulator of anti- Mullerian hormone (AMH) production. Therefore, we aimed to clarify the affects of Vitamin D on folliculogenesis, oogenesis and embryo quality in COH cycles by using time lapse monitoring.