There is a lot of argument about how to improve a man’s sperm. There are even more reasons why a man’s sperm goes wrong in the first place.
As a fertility specialist, I see many women who are fertile. These women seek treatment to promote their fertility because their partner is infertile. I am surprised and disappointed at the number of men who have fertility problems but won’t treat it.
Too much and too little will both harm your fertility. It is proven that people and mice with vitamin D deficiency reduces their ability to breed. Same goes if you have an excess of Vitamin D too