Prof. Lilly Shanahan and her team recently published a paper with the z-proso sample on the prevalence of cannabis use from ages 13 to 20, and also the young adult correlates of frequent teenage cannabis use. Full Article
Results showed, for example, that:
- More than 30% of participants reported past-year cannabis use at age 15
- Frequent cannabis use between ages 13 and 17 was common (18.2%)
- Such frequent teenage cannabis use was associated with age 20 poorer functional well-being, more delinquency, and problematic substance use
- Such frequent teenage cannabis use had stronger associations with adult outcomes compared to frequent teenage nicotine, frequent teenage alcohol use, and occasional teenage cannabis use.