Agaricus bisporus
Aromatase enzyme is responsible for the production of estrogen in the body. It converts the testosterone in males into estrogen. A higher quantity of aromatase enzyme will result in conversion of testosterone into estrogen. An increased estrogen level in males will lead to female-like breast, causing gynecomastia. Agaricus bisporus, also known as the white button mushrooms, are best known sources for controlling estrogen production in males. It has anti-estrogenic properties which inhibits the conversion of testosterone into estrogen. These white button mushrooms have no side-effects, which is why they are very good for treating gynecomastia.