The task force concurs with that. They said quite clearly that cannabis is not known to have as serious health consequences as tobacco or alcohol. Don't get me wrong. I'm not saying it's harmless, and I'm not saying that we shouldn't put appropriate warnings. If we are going to take a science-based, evidence-based approach to what the proper warning should be on this product, it starts with an understanding of exactly what we know about it.
Is cannabis known to be a carcinogen?