Very interesting Thankyou I always thought it lowered e2I have ran 250 test c with 250 mast. I have also ran both at 500/500. Neither time did my e2 lower, both have multiple blood work proofs. Infact I had to run .25 adex on 500/500 because my e2 was running high, and my dick stopped working. I'm not trying to argue just pointing out that I have never seen anyone actually show mast having an effect on e2. Also, researching mast for a short time will show that it acts predominantly like a serm and not an ai.

