It isn't THAT common in American MMA just because of all the random and frquent drug testing, although there are certainly ways to cycle or mask what you're putting in your body. Juicing was VERY prevalent in the PRIDE days, where there was essentially no regulation. I think Fedor, Nogueira, Saku, and Rampage were some of the only fighters that (to my knowledge) didn't take anything. I am not fighter bashing, but I believe it;s been admitted or well known that Mark Coleman, Randleman, Sapp, Cro Cop, Overreem, Wandy, Shogun, and a lot of other big guys over there did. I definately mean no fighter bashing. I could be wrong, but all of those guys have been reported or rumored to have juiced in PRIDE. I'm not saying they have.
As far as BJJ, I do think it's the sport's dirty little secret, although it;s every sports dirty little secret. I know Judoka do it because of all their injuries so it's prevalent in Judo, but not as much for strength reasons. In BJJ I've been told by some very big names that some of my favorite grapplers have done it and do do it. I asked who, and they refused to tell me. They said I would be very dissapointed if I found out.
Is there even testing at events like the Mundials and ADCC?
