It's sad that there's a lot of herbs out there that can cure cancer and leukemia like marijuana, cat's claw, and graviola but not all people are aware of their benefits because they are a threat to big pharma.
I've read an article about how graviola was found to be 10,000 times more effective than an existing chemo drug. The study was funded by a big pharma but was abandoned when they realize that they cannot re-create the unique properties of graviola to make it more patentable. Now, graviola is being promoted as cancer cure in homeopathy, ayurveda, and herbal practitioners.
Only people who use herbs will have the chance to prove their effectiveness and big pharma will continue to mislead people so they will continue gaining profits from their chemically-formulated drugs.