I am not known for my gentleness. I hear about the “victims” of overdoses, but yet there is so little said about the actual victims of crimes that druggies commit. If somebody volunteers to buy and take whatever is being slung by their local dealer, aren’t they, in effect, electing to commit suicide? It would be like going out to the garage, whipping up a mix of stuff, and then deciding to shoot up with it, yes?
As far as treatment goes, you get a set of tools, what you do with them is up to you. You may not make Chopin sound good on a bad piano, but you can use the piano to play Chopin.
As far as other physical issues goes, addiction isn’t really like a lot of other physical issues. Some physical issues there is nothing you can do about… too many trinucleotide repeats in the right gene and congrats, you’ve got Huntington’s. Mutations in a tumor suppressor gene, congrats, you’ve got retinoblastoma. There’s one big difference with addictions, unless exposure occurs involuntarily: every addict had a choice in the matter.