I have no idea I just felt compelled to pose an alternative so that no one would say I'm jumping to conclusions. In this case I assumed that a heroin addict would appear sickly and that steroids would combat weight loss.
It will be interesting to see how the NFL handles this. He was working the strength and conditioning staff for the Eagles. This is probably the closest the NFL has come to catching a team with a steroids program. If the NFL wants to stop the concussions, it should work on getting steroids and HGH out of the game. An example could be made here, but I doubt they do anything.