Of all infertility cases, approximately 40–50% is due to “male factor” infertility. There is literature hinting at an increasing trend of male infertility however not all researchers are convinced of decreasing sperm quality.

The exact reason for the decline in semen quality is not clear, but it may be due to environmental, nutritional, socioeconomic or other unknown causes.

Male infertility like any other cause of infertility has a strong impact on the psychology and physiology of couple. It can be due to several reasons like varicocele, medical causes like diabetes, chemotherapy etc, treatment of which needs the assistance of a urologist.

An estimated 40-90 percent of cases, however are due to deficient sperm production of unidentifiable origin.

In these cases of male infertility owing to unknown causes, a number of nutritional therapies have been shown to improve sperm counts and sperm motility, including carnitine, arginine, zinc, selenium, and vitamin B-12.

Numerous antioxidants have also proven beneficial in treating male infertility, such as vitamin C, vitamin E, glutathione, and coenzyme Q10.

A diet rich in antioxidants and vitamins found in fruits and vegetables, along with maintaining an ideal weight may be enough improve the quality of sperm. However, there are studies which have supported the use of supplements and antioxidants in the treatment of male infertility.

In addition to nutritional supplements and antioxidants it is essential to maintain a healthy lifestyle. Nutritional supplements however cannot be a substitute to a healthy lifestyle.

It is essential to note that any such changes in the man’s lifestyle will take almost three months to show an improvement in sperm.