Was a pain to find in the article but according to them, 1 cannabis unit is 5mg of THC. And they recommend no more than 8 per week, or 40mg. I didn't read the entire paper so take my commentary with a grain of salt.

I think there may be a bit of a hole in this methodology because of different consumption methods. For example, smoking a regular joint vs putting that same amount of flower in a dry vape. Or dietary factors that could increase or decrease thc absorption for edibles.

Even accounting for that, 40mg of THC is not a lot. A half gram joint at 10% thc would exceed that. Seems like these guidelines are incredibly conservative.

"Cannabis Use Disorder" is a clown show of a medical diagnosis, this is all such a joke.

For instance, a 0.45 gram joint of strong herbal cannabis might contain 12.78 standard THC units, while a weaker, seeded herbal cannabis can contain just 3.78 THC units, according to the new estimates.

The study's authors found that to reduce the risk of developing cannabis use disorder, adults should not exceed 8 THC units per week.

So you can smoke 2/3 of a good, but small, half gram joint, or just over two shitty joints a week.

For instance, a 0.45 gram joint of strong herbal cannabis might contain 12.78 standard THC units, while a weaker, seeded herbal cannabis can contain just 3.78 THC units, according to the new estimates.

The study's authors found that to reduce the risk of developing cannabis use disorder, adults should not exceed 8 THC units per week. Seventy percent of the adults who exceeded this limit in the CannTeen study reported cannabis use disorder.

So around the order of magnitude of a joint per week? Well..

With no mention of CBD, I wouldn't pay much attention to this. I'm not trying to argue the "entourage effect". Rather both chemicals are doing something so if you're only measuring one you're not getting the full picture.

Guaranteed this doesn't account for terpene content

EDIT: Of course not