MK-677 (Ibutamoren) has surged in popularity among athletes, bodybuilders, and biohackers for its ability to boost growth hormone (GH) and insulin-like growth factor 1 (IGF-1). But one question looms large: Does MK-677 shut down testosterone? Fear of hormonal suppression keeps many potential users on the sidelines. In this deep dive, we’ll separate myth from fact, analyze...