The Mayo Clinic in America has had some apparent success in treating Chronic Lymphocytic Leukaemia with green tea. I have this form of cancer, and began trying to drink the stuff, but found it horrible. I used honey to sweeten it, drank it iced, but it was still beastly. Now I am taking green tea capsules from Holland and Barrett. All I can say is that my last two monthly bloodtests have shown an improvement. This doesn't prove anything, but my GP is impressed, and wants me to carry on.