By Priyanjana Pramanik, MSc. Reviewed by Benedette Cuffari, M.Sc. Jan 15 2026 By translating cannabis use into standardized THC units, researchers uncover clear weekly thresholds that signal heightened risk of cannabis use disorder and show that teens may be vulnerable at far lower levels of use than adults.  Study: Estimating thresholds for risk of cannabis use disorder using standard delta-9-tetrahydrocannabinol (THC) units. Image Credit: Tayler Derden / Shutterstock.com In a recent study