Good to see more research on cannabis but I find studies by association to be incredibly easy to push in one direction or another. I'd be more inclined to beli

Good to see more research on cannabis but I find studies by association to be incredibly easy to push in one direction or another. I'd be more inclined to believe that parents who smoke cannabis during pregnancy are more likely to be bad parents or live in a bad environment, which result into issues with their kids 15 years later. Or maybe they keep smoking around their kids over their lifespan and that prolonged exposure is causing problems in the adolescence. I find it hard to believe cannabis crossing the placenta would be causing issues 15 years after exposure and not affecting the children before. Plenty of young kids are diagnosed (even overdiagnosed if we want to talk about the subject) with behavioural issues. Why is this study not finding any evidence of that? That would be way stronger evidence.