The below article states that there are changes in the brain when teenagers smoke pot even on a casual basis. I have known this for a long time, and I have seen these effects firsthand since the late 60s. You don't need to be a brain scientist to make such an observation. Obviously people are messing with their brain wiring when they smoke pot. (And we do that when we drink as well.)
People don't like to admit that they are damaging their brains when they smoke pot. It is quite trendy these days to get extremely defensive about marijuana. Some people even like to think smoking pot is equivalent with leading a pure, spiritual life. It's not.
This isn't a judgment about people who use pot or alcohol; it's simply time to face the truth here. Getting stoned is the escape, not the answer, and there are consequences to pay.
READ THE ARTICLE IN THE BOSTON GLOBE
