I’ve seen it twice. In two people who are prone and had some mental instability issues. I am almost certain a mentally healthy person would never have any kind of an issue.

I’m not a doctor or scientist, but here is what I saw and what I believe happened.

Their mental health decline caused them to increase their intake by a decent amount. I think untreated, they would have had the same outcome in less than a year. But the weed sped things up a great deal. What should have taken months happened in just a couple/few weeks. One of them ended up standing on top of a police SUV downtown after giving away pretty much everything he had to homeless people. Including his wallet with his ID, social security card and debit/credit cards. It was the safest and quickest way to get him help so it ended up being a good thing. I tried everything I could in the days before that. Delusions of grandeur, constant tinfoil hat shit, thought he was being directly targeted by the government alphabet agencies because of what he knew.

They’re both fine now. But I do believe the increased potency in modern weed negates many previous studies on the effects it can have. I’m not against it in the least. But definitely more wary.