**WARNING--THIS IS GRAPHIC**
There is a Russian drug called "Krokodil" that is a synthetic homemade opiate many times more powerful than heroin. You think the drug biz is a disgusting thing--this is as bad as it gets. It not only makes the mind into a zombie, but it also eats the flesh of the user.
Photographs of late-stage krokodil addicts are disturbing in the extreme. Flesh goes grey and peels away to leave bones exposed. People literally rot to death.
Scary, huh? Sometimes, real life is much more horrifying than fiction.