The fresh button mushrooms possess substances that inhibit the activity of aromatase (an enzyme involved in estrogen production), and 5-alpha-reductase (an enzyme that converts testosterone to DHT). The latest findings show that white button mushrooms can reduce the risk of breast cancer and prostate cancer. An extract of white button mushrooms decreased cell proliferation and decreased tumor size in a dose-dependent manner. The chemoprotective effect can be seen with an intake of about 100 grams (3.5 ozs) of mushrooms per day.

Thought this was pretty interesting. Stock up on Button Mushrooms for PCT!
I love em'. Cheers, angel77