There is substantial evidence supporting the effectiveness of 12-step programs for addiction.

“First of all, I just want to say, while I have no formal relationship to them, there are wonderful zero cost resources in every city around the world, 12 step communities. Go online, look for that. The meetings and programs that they provide are very useful, have proven very useful. Actually, this was explored in a study from Stanford psychiatry a few years ago because there hadn't been a lot of science on those sorts of programs. And the conclusion was they can be very, very useful.”