That is not true. Then new breed of skunk weed is making 15% of people psychotic - thus the snowflakes on campus and first time users jumping off of roofs or shooting their family.
Yeah, they said that 25 years ago too. At that rate, 100% of all people who have ever tried pot should be flipping out, left and right. The massive carnage should be on the evening news.
Sorry, I just don't see it.