Study: Marijuana use dangerous to young peoples' brains

[MaxQue]

I have to concur with verin. That study has some methodological flaws, mainly than correlation doesn't mean causation.

Those marijuana users have brain damage. Okay.
But, did they had use that brain damage before, and that brain damage caused the marijuana use?
Did they did other potentially harmful activities (smoking, drinking, other drugs, else....)?
Does 20 persons is sufficiant for affirming things with such clarity?

As we say usually in chemistry, we are better off waiting than another study (ideally without those flaws, but no study is perfect) confirms it. The authors are quite aware of it, the conclusion of the article is quite nuanced and invites to furhter research. It's fine work, needing to be corrobored. But, obviously, claiming than marijuana has no effects on teenagers is silly and dumb. Any legalization wouldn't include underage peope, obviously. Political world needs to ask itself what's better, legal brain damage or war on drugs and jail terms.

Already, we have Time, twisting the words of the scientist to fit their agenda (especially the art about tobacco, suger and alcohol, not talked about in the article).