" Asian populations also eat more mushrooms.149 As noted in the box on red wine here, white mushrooms have also been shown to block the estrogen synthase enzyme, at least in a petri dish. So researchers decided to investigate if there was a link between mushroom intake and breast cancer. They compared the mushroom consumption of one thousand breast cancer patients to one thousand healthy subjects of similar age, weight, and smoking and exercise status. "

― Michael Greger , How Not to Die: Discover the Foods Scientifically Proven to Prevent and Reverse Disease