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Prohormones are effective at raising testosterone levels, yet that often comes to the detriment of natural testosterone production. As time goes on, a user’s testosterone levels can permanently shut down. This is particularly detrimental in teenagers, as their bodies are still forming, which is one of the reasons that teenagers shouldn’t be taking prohormones in the first place. As hormone production is stymied, it can cause long-term consequences.


Man Boobs

A very visible side effect of prohormones is “man boobs” or “bitch tits” in the bodybuilding world. A male bodybuilder can start to grow breasts with a prominent puffiness around the nipple area. In many cases, this ugly side effect is even visible through a shirt.