Abstract
Oxidative stress can contribute to impairment in spermatogenesis leading to male-factor
infertility. The effectiveness of various antioxidants (such as carnitine, vitamin
C, vitamin E, selenium, carotenoids, glutathione, N-acetylcysteine, zinc, folic acid, and coenzyme Q10) is variable with respect to improving
semen parameters and pregnancy rates. A recent Cochrane review determined that men
taking antioxidants had a statistically significant increase in both live birth rates
and pregnancy rates. For those undergoing assisted reproduction, the odds ratio that
antioxidant use would improve pregnancy rates was 4.18, with a 4.85-fold improvement
in live birth rate also noted. Further investigation with randomized, controlled clinical
trials is needed to confirm the safety and efficacy of antioxidant supplementation
in the medical management and treatment of male infertility.
Keywords
male infertility - antioxidant therapy - vitamin supplements - oxidative stress