What actually takes place here is a simple chemical reaction where the chemical structure of the aromatase-susceptible hormone is altered, yielding a completely different compound. All of which is facilitated by the enzyme. In this case, the dbol becomes bound to the enzyme. At this point, a number of the molecular bonds, holding the atoms together that make up the dbol, become broken. Some atoms are release while others may be added. This changes the chemical structure completely, thus creating the estrogen hormones (there are 4 of them btw).
Anastrozole has been tested for reducing estrogens, including estradiol, in men. Excess estradiol in men can cause benign prostatic hyperplasia, gynecomastia, and symptoms of hypogonadism. It can also contribute to increased risk of stroke, heart attack, chronic inflammation, prostate enlargement and prostate cancer. Some athletes and body builders will also use anastrozole as a part of their steroid cycle to reduce and prevent symptoms of excess estrogens; gynecomastia and water retention. Study data suggests dosages of mg to 1 mg a day reduce serum estradiol approx. 50% in men, which differs in postmenopausal women.