Note: The comments on this blog are for information only. Do not make any changes in sunlight exposure, tanning-bed exposure or nutritional habits without first consulting a medical professional.
We previously discussed the relationship of fertility to vitamin D, but a new report adds credence to the idea that infertility may be due in great part to vitamin D deficiency. Dr. Anne Clark, who works at the Fertility First clinic in Sydney, Australia, assessed the blood levels of vitamin D among about 800 men who were unable to produce a pregnancy in their wives. About a third had low levels of vitamin D. Interestingly, after a regimen of lifestyle changes (stopped smoking, coffee drinking and alcohol consumption) and vitamin D supplementation, 40% of the men were able to impregnate their wives, probably due to improvement in the quality of sperm.
Dr Clark stated that "Vitamin D and folate deficiency are known to be associated with infertility in women, but the outcomes of the screening among men in our study group came as a complete surprise."
Though it may have surprised Dr. Clark, the results of her findings should not be surprising to those who read my previous blog on vitamin D and infertility. In that blog, I mentioned that female rats mated to vitamin D-deficient males produced 73% fewer pregnancies. Nearly all tissues of the body contain vitamin D receptors (VDR). For the testes to function properly, those receptors must be stimulated by vitamin D. For couples who are having difficulties in producing a pregnancy, this information is critically important. Pass it on!