Frontiers Increasing age in men is negatively associated with sperm quality and DNA integrity but not pregnancy outcomes in assisted reproductive technology Glutathione improves testicular spermatogenesis through inhibiting oxidative stress, mitochondrial damage, and apoptosis induced by copper deposition in mice with Wilson disease ScienceDirect Cutting back on sugary drinks may protect men's fertility, review finds Remember to PLEASE talk with a provider to confirm supplements you should be taking. You do not need to be taking all of these.