Well, that does not surprise me one bit.
I know many guys I know that got gyno on d-bol (I didnt get a chance to warn them about any AI's nor SERMS).
But beings that estrogen is far more supressive to the HPTA than
testosterone I would not take much of a guess to suggest d-bol would be supressive.
From personal experiance I cam off a cycle of just
winstrol @ 50mg a day and had the
testosterone levels of a woman.
So much for those that feel
winny isnt supressive either.
Deca, and
tren, oh man, I wont even touch that stuff anymore.