Sperm are extremely sensitive to oxidative stress caused by an imbalance between free radical systems and antioxidant systems in the male reproductive organs. A study published in *Andrologia*, an international scientific journal on male infertility, investigated CoQ10. Infertile men with varicoceles were given 100 mg of CoQ10 daily as a supplement. The researchers found that sperm quality and the antioxidant status of the sperm improved. This study highlights the importance of oxidative stress as a factor in male infertility and supports the potential significance of antioxidant therapy in treating infertility.
