Higher potency cannabis flower linked to more frequent use and greater addiction risk in California young adults

Each one-point increase in perceived THC potency was associated with 3.33 more use days per month, 0.13 more grams consumed per day, and 1.21 higher CUDIT-R (cannabis use disorder) scores. Nearly half (46.8%) of those who knew their flower potency reported using High or Very High THC flower. About 18.6% did not know their flower's potency.

Cross-sectional survey of 512 California young adults (mean age 25.9, 48% female) from a cohort study who reported past-month cannabis flower use. Self-reported perceived THC potency was examined against use frequency, quantity, and CUDIT-R scores using multivariable regression adjusting for demographics.

A common argument in cannabis policy is that people will "titrate" their use of higher-potency products, using less to achieve the same effect. This study directly contradicts that assumption: higher potency was associated with more frequent use, more consumption, and more addiction symptoms, not less.

As legal cannabis markets trend toward higher-potency products, these findings raise public health concerns. If higher-potency users consume more, not less, then the cumulative THC exposure in legal markets may be increasing faster than consumption rates alone would suggest. Potency caps or labeling requirements may be warranted.

Cross-sectional design cannot determine directionality: do people who are already heavier users seek out high-potency flower, or does high potency drive heavier use? Perceived potency may not match actual THC content. Self-reported use is subject to bias. California-specific sample may not generalize.