Do zombies have substance abuse issues? 
Anyway, people mention Sylvia the most on here. I don’t watch the show regularly, but apparently Sylvia has not only remained sober, but she is now working as an interventionist! I actually recognized her very distinctive southern drawl before I recognized her face; of course, she’s about 15 years older now, but she also looked very healthy.
There’s also a Canadian edition of “Intervention” and yes, as we know, they’ve branched out into “Hoarders.” You really need a strong stomach for some of that.