Cannabis, Cannabinoids, and sleep: a Review of the Literature

This literature review evaluates the effects of cannabis and cannabinoids on sleep disorders and sleep quality. Findings indicate that THC may reduce sleep onset latency in the short term but could impair long-term sleep quality due to tolerance. CBD demonstrates potential benefits for insomnia, REM sleep behavior disorder, and excessive daytime sleepiness, depending on dose and timing. Synthetic cannabinoids like nabilone may alleviate PTSD-related nightmares and improve sleep in chronic pain patients. Despite promising results, the evidence is mixed, with research constrained by small sample sizes and limited longitudinal data.

For sleep improvement, individuals may consider CBD supplements, particularly for insomnia or nightmares linked to PTSD. Doses should be carefully monitored, as high-dose CBD can promote sleep while low-dose CBD may increase wakefulness. Given the mixed evidence and potential long-term effects of THC, consult a healthcare provider before using cannabinoid-based therapies. Lifestyle changes, such as sleep hygiene and regular schedules, remain fundamental to enhancing sleep quality.