Overview
- Adults are advised not to exceed 8 THC units per week, roughly 40 milligrams of THC, with risk of more severe disorder increasing above 13 units.
- For adolescents, increased risk was identified around 6 units per week, about 30 milligrams of THC, with more severe problems at slightly higher intake.
- Researchers translated reported consumption into standard 5 milligram THC units using yearlong CannTeen data from 150 users and assessed cannabis use disorder outcomes.
- Within the sample, about 80% of adults using below 8 units did not meet criteria for disorder, while roughly 70% above that level did.
- Public‑health agencies, including Canada’s CCSA, are evaluating THC‑unit labeling and screening applications, though small sample size, estimated potencies, and variable product strength limit immediate policy use.