I ran across this article today on the true faces of addiction. It is a shocking look at how drug addiction not only changes you from the inside but even much quicker. It's actually quite scary. These people look like they've over dosed on ephedrine diet pills and have some crazy gross skin disease, but they don't. This is what your skin does on drugs.
Scary, yes? If you look at the caption, this change came about in a mere few months. It doesn't take long to hit bottom. It's a drug education program called from Drugs to Mugs supposed to scare kids away from trying drugs. It scares me, but I wonder how effective this really would be for your people?