Glutathione deficiency is a hereditary disorder that impairs the body's ability to produce glutathione, an essential molecule for immune function and cellular protection, leading to symptoms ranging from mild gastrointestinal issues to severe neurological disorders. Treatment options include antioxidants and dietary supplements, though severe cases raise concerns about serious ongoing health complications. Additionally, glutathione plays a critical role in male fertility, as its deficiency can lead to reduced sperm quality and increased oxidative stress, suggesting that supplementation may help improve fertility outcomes.