Abstract
We examined the association of recreational cannabis legalization (RCL) with frequency of using cannabis, alcohol, and sleep medication for sleep and with co-use of cannabis with other sleep aids. We used linear regression models to examine these associations in a population-based sample of adult twins (n = 3,141). Participants (M(age) = 37 (SD = 5)) were primarily White (93%), with 5% Hispanic/Latinx, and female (61%). RCL was associated with using cannabis for sleep more frequently even after controlling for cohort, demographics, sleep quality, anxiety, depression, physical health, season, and pre-legalization cannabis use frequency (β = 0.123, p = .001). RCL was not associated with frequency of using alcohol or sleep medication for sleep, or with co-use of cannabis and other sleep aids. More research is needed to determine whether RCL leads to more frequent use of cannabis for sleep.