Semen folate levels have been linked with sperm count and health. Low semen folate levels can cause poor sperm DNA stability. In one double-blind study, men took folic acid and zinc supplements for 26 weeks, and another group didn't take any supplements. Those who took the supplements had a
74% increase in the amount of normal sperm in their semen. Folic acid may also improve sperm quality and lower the risk of sperm abnormalities.