Jim Carrey – Probably one of the funniest comedians alive, the star of the Ace Ventura sequels, The Mask, and The Eternal Sunshine of the Spotless Mind has had a few ups and downs in his private life, including battling depression, he has sworn off all meds, booze, and even coffee, and has been that way since at least 2013.
Henry Rollins – This former lead member of the post punk group Black Flag and later becoming a maker of several spoken word records, appearing in lots of films, found drugs and alcohol to be “a bummer”, and tended to be too much of a bore, and so he has never felt the need to drink. He says he gets his highs from listening to music and performing.