Yeah, of course i'm worried about it, not just the drug part of the game, but there's many aspects that can contribute to it. For instace i eat a lot of meat and eggs, also i haven't really done proper cardio for allmost a year now (knee injury) recently a female bodybuilder i know (drug free) had to go to the ER after she got a huge muscle spams in her inner thigh
i thought it was nothing, but she had blood clot in her leg and really fucked up, liver and kidney values... BTW. Shes drug free (i'm 100% sure of it) but she does take allmost every supplement known to man...
PS. Some time ago few doctors asked me: "is this really worth all of this?" and i said (after a long pause) i sure as hell hope so...