Numerous studies have shown that tumor cells have elevated levels of glutathione levels, which confers resistance to chemotherapy drugs.
One of the challenges of cancer therapy is how to deplete tumor cells of glutathione, so as to make them more vulnerable to the effects of chemotherapy drugs, while at the same time allowing normal cells to remain relatively unaffected by chemotherapeutic drugs.
A number of new findings have emerged that take into consideration the role of glutathione in pathways that proote programmed cell death (apoptosis) in cancer cells.
A German study has reported that glutathione (GSH) plays a critical role in cellular mechanisms that result in cel death. The study found that cancer cells resistant to apoptosis had higher intracellular GSH levels.
I don't have cancer but my mother passed away from throat cancer, and I wish I had known about this glutathione that is the only antioxidant your body makes on it's own but few know about it.
Google Dr. Herbert T. Nagasawa, Ph.D., Executive Research Scientist, I think you will see some valuble info on what he is doing in regards to cell where it all starts, not where it ends up.