Vitamin D

Only a few foods contain vitamin D, and sun exposure is the main way to get it. Calcium and vitamin D work together to build strong bones. The body's immune system, cell growth, and the regulation of inflammation all depend on it as well.

Infertility is linked to low vitamin D levels. The presence of vitamin D receptors and metabolizing enzymes in both the female and male reproductive systems evidence that vitamin D is necessary for normal fertility. Vitamin D levels of 30ng/ml in the blood have been associated with higher pregnancy rates in women, as opposed to those with lower levels. Ovulation problems and an increased incidence of endometriosis are linked to low levels of vitamin D. People with higher vitamin D levels typically have higher IVF success rates.