you're really not getting this mental disorder bit are you? its a serious, and extremely common, issue.
ignore the media spin on it about a bit of ganga. who cares? as long as he wasn't selling crack to schoolkids, i'm not concerned about recreational drug use of something so mild. would have been wiser to finish his nfl career properly and then start smoking but there you go....
(and if you're going to say that he said he gave up for the ganga, - he gave about 14 other reasons as well - which is more or less a symptom of the actual reason, his mental health issue)