For many people, smoking marijuana is not a big deal – it is, after all, the most widely-used illegal drug in the world.

But today’s super-potent pot may be changing the game. Some of the world’s top schizophrenia experts, whose research is featured in The Downside of High, have found that teenagers who start smoking marijuana before the age of sixteen are four times more likely to become schizophrenic.  And for all young adults, the scientists say smoking marijuana nearly doubles the risk of developing recurring psychosis, paranoia and hallucinations – the hallmarks of schizophrenia.

The Downside of High tells the stories of three young people from British Columbia who believe – along with their doctors – that their mental illness was triggered by marijuana use.  It provides a scientific perspective on some of the little-known and little-discussed risks of marijuana, particularly for teenagers.

Directed and written by Bruce Mohun, story-produced by Maureen Palmer, produced by Sue Ridout. Director of photography John Collins, editor Tim Wanlin, music composer Tim McCauley.