Georgia’s Advanced IVF: How Vitamin D is the Scientific Key to Improving Embryo Quality and Pregnancy Rates
I. The association between vitamin D and advanced fertility: from contradictory conclusions to precise interpretations Vitamin D supplementation is often mentioned for women of advanced reproductive age who choose IVF in Georgia, but its mechanism of action and effects are controversial. Early studies showed that the association between vitamin D levels and pregnancy outcomes was not significant , but in recent years there has been increasing evidence that the clinical value of vitamin D is particularly prominent in the advanced age group, especially in improving endometrial tolerance and reducing the risk of chromosomal abnormalities in embryos. A study of 1,459 women undergoing IVF treatment for the first time showed: Younger group (<35 years): clinical pregnancy rates in the vitamin D-sufficient group were slightly higher than in the deficient group, but the statistical difference was not significant.The older group (≥35 years): the clinical pregnancy rate in the vitamin D sufficiency group was significantly higher than that in the deficiency group (P<0.05) and was directly correlated with the expression level of the endometrial tolerance marker HOXA10.CORE CONCLUSION: Vitamin D has a limited direct effect on egg quality but significantly improves the environment for embryo implantation in women of advanced reproductive age by modulating endometrial function. II. Dual mechanism of action of vitamin D in advanced fertility Endometrial tolerance is the key to embryo implantation, and endometrial function deterioration is common in women of advanced age. Research findings: HOXA10 gene expression: Vitamin D directly regulates the expression of the HOXA10 gene, a central marker of endometrial tolerance, through activation of the vitamin D receptor (VDR).Age-specific effects: In young women, only severe vitamin D deficiency reduces HOXA10 levels; in older women, even mild vitamin D insufficiency significantly inhibits HOXA10 expression, leading to a higher risk of embryo implantation failure. One of the greatest challenges…