[Nekorosu]

There is substantial evidence of a statistical association between cannabis use and: • The development of schizophrenia or other psychoses, with the highest risk among the most frequent users (12-1)

But it will also make you crazier. To sum it up, you'll become a smarter, crazier version of yourself.

[SomeStupidPoint]

That's assuming causation from correlation.

It's possible at-risk people are self-medicating, and that's why the correlation exists. (Or any number of confounding factors, such as at-risk people being more likely to break social norms.)

[Nekorosu]

I could assume the opposite but it would spoil my joke.