Pot smokers routinely go way way way over that limit. Is this a limit because THC levels will be supposedly deadly or because of something else (technical etc).
Public health / medicine has just gone off the rails. I believe pot smoking is bad for you, but where do they even come up with these recommendation.
[1] https://www.sciencedirect.com/science/article/abs/pii/004100...
Edit: And that 40mg/kg is the inhalation LD50 dose. For edibles / intragastric, the LD50 is 800-1200 mg/kg. So a 100kg individual who consumes 80000mg of THC-laced edibles. A standard gummy bear dose is 10mg, so a 100kg individual with no tolerance would have to eat 8000 of those to have a 50% chance of death.
Edit 2: FYI, the standard THC vape cartridges that are 1g of ~75-90% pure THC oil, which is good for 200-300 pulls of 3-5 seconds each.
Not too impossible I guess, I've fainted from orthostatic hypotension after smoking too much before.
Overdose and LD50 aren’t the same thing. There is a wide middle ground between a typical dose and a fatal dose where the effects range from distinctly unpleasant to potentially triggering a number of other health conditions.
The LD50 of THC is indeed very high, but I think the excess focus on LD50 has misled a lot of people into ignoring the other potential problems with excessively high dose, prolonged THC ingestion.
My guess is the restriction is based on those things.
Not sure if that is an actual concern, or even an actual warning, but that is what the article states.