Antioxidants are often considered always beneficial but the reality is more nuanced., Glutathione, Current studies show that glutathione may support the growth of cancer cells in mice and human Glutathione Depletion and Stalwart Anticancer Activity of Metallotherapeutics Inducing Programmed Cell Death: Opening a New Window for Cancer Therapy ACS Omega Human cancer associated fibroblasts enhance glutathione levels and antagonize drug induced prostate cancer cell death Cell Death & Disease Association between Polymorphisms in Glutathione Peroxidase and Selenoprotein P Genes, Glutathione Peroxidase Activity, HRT Use and Breast Cancer Risk PLOS One