I realize that it is very common. I don't think there is a single pro body builder, most NFL players, all the pro wrestlers, nearly every world class sprinter and probably most boxers and MMA fighters.

I would have to disagree completely that some it doesn't affect. Everyone who smokes is affected. It just may not catch up to them in the same way. Some people get cancer, but everyone gets bad breath, yellow teeth and fingers, less lung capacity, etc....

Sly looks good for a 60 year old thanks to steriods, but how many times has he been married? I wonder if there's side effects??