[dietrichepp]

So, since the authors are here, I have a couple questions.

How is this correlated with legalization? From an intuitive standpoint, it seems like someone who thinks they have "less to lose" would try illegal drugs which carry risk of incarceration, and that same kind of person might consider suicide.

To me, the fact that the effects happen in reverse order (whether suicidal ideation precedes cannabis use or vice versa) indicates that there could be some kind of common cause for the two effects, and that it just manifests differently for men and women. Unfortunately the full paper is paywalled.

[nashke]

Regarding legalization- we had no relevant data, so I can't say. The bidirectional association may indeed indicate a third cause, as discussed in the paper. I have added a link that should allow access to the full-text, let me know if it doesn't work for you.