Excessive glutathione intake contributes to chemotherapy resistance in breast cancer: a propensity score matching analysis World Journal of Surgical Oncology Springer Nature Link Glutathione is such a critical soldier in our line of defense that our bodies make it themselves. We even have mechanisms that recycle and reuse it. But what happens when our toxic Milk Thistle: The Mold Detox Hero You Didn't Know You Needed Portland Clinic of Natural Health Catabolism of extracellular glutathione supplies cysteine to support tumours Nature