Weed is stronger and more available now than ever. I've seen people get constipated, get night terrors, cold sweats, etc. from marijuana withdrawals. So I think GP is right, it's left to be seen.

> get night terrors [...] from marijuana withdrawals

This one can be really bad, although it only lasts for about a week. Dreams so vivid it's terrifying, even when the content of the dreams seems mundane. If somebody were already marijuana as an emotional crutch, I think the bad dreams could have them running back to marijuana immediately.

I think you're undwrestimating it quite severely. I've had vivid nightmares every single night for months at a time after quitting weed(really heavy user).

And hyperhidrosis for several weeks at least.

Anyone who claims science can be “settled” immediately discredits themselves. Science is never settled, even the hard sciences, and we have only just begun to study the effects of THC. Lots of things considered 100% true a decade ago (like it doesn’t have physical addiction) have been proven as misguided myths or lies.

“Very very very settled science,” what an absolute joke. No one engaged in the scientific pursuit of truth uses phrases like this.