[moshmosh]

Legitimately very interested to see a comparable study for cannabis, in adult users.

[EDIT] everything I could find with a quick search is about heavy, long-term use only, which evidently has little effect on white matter, and uneven effects on grey matter, increasing it in some areas and decreasing it in others. Nothing about long-term light use, occasional "binge" use, anything like that.

[scotty79]

I read that heavy cannabis users regain their full capacity just after few weeks. So probably if there's any damage it's nowhere near as extensive as in the case of alcohol.