I don't know what percentage of professional jiu jitsu competitors take steroids but I wouldn't be surprised if the majority of them took PED's. I'm not talking about anabolic stuff, but rather, anything that increases performance such as bronchodilators, blood packing, or anything that ups endurance.
Years ago, at an academy I used to train at, at least two-thirds of the Brazilians from purple belt and above were on gear. They spoke of how excited they were anticipating a new batch coming in. They kindly advised me to jump in on it saying "Then you train goooooood. Gooooood training." I politely refused. When I see photos of Rodolfo I shake my head in confirmation that at least from the Brazilian side, it is in fact rampant and best of all, cheap and accessible for them.
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