Catabolism of extracellular glutathione supplies cysteine to support tumours Nature Multifaceted Roles of Glutathione and Glutathione Based Systems in Carcinogenesis and Anticancer Drug Resistance Elie Hatem, Nadine El Banna, Meng Er Huang, 2017 Application of glutathione depletion in cancer therapy: Enhanced ROS based therapy, ferroptosis, and chemotherapy ScienceDirect Although the antioxidant glutathione is linked to cancer, this new research you should stop eating antioxidant rich whole foods. Eating a balanced diet with fruits and vegetables is important. It