GREEN TEA.

Green tea is a wise choice for people who want to stay cancer free. It has a high content of polyphenols, a type of antioxidant very effective at reducing the concentration of cancer-causing free radicals. Asian men who customarily drink several cups of green tea every day, have a very low incidence of prostate cancer and cancer-related death in general.

....from Check Up. West Coast Publishing. (Issue 25).

* It is possible to buy green tea extract suppplements. I use EGCG MAX from AOR. (Calgary, Alberta, Canada).