From Wikipedia: > In late 2016, Peterson went on a strict diet consisting only of meat and some vegetables to control severe depression and an autoimmune disor

From Wikipedia: > In late 2016, Peterson went on a strict diet consisting only of meat and some vegetables to control severe depression and an autoimmune disorder, including psoriasis and uveitis.[26][141] In mid-2018 he stopped eating vegetables, and continued eating only beef (see carnivore diet).[142] In 2019, Peterson entered a rehabilitation facility after experiencing symptoms of physical withdrawal when he stopped taking clonazepam, an anti-anxiety drug. He had begun taking the drug upon his doctor's recommendation following his wife's cancer diagnosis.[143][144][145] In early 2020, his daughter revealed that he had spent the previous year struggling with addiction to benzodiazepine tranquilizers and had gone to Russia for an experimental treatment that included a medically induced coma. It sounds like there's a lot more going on physically than just the benzos.