Cannabis Users Slept More Fitfully by Sensor, Not by Self-Report
Graded Preliminary — a cohort with 35 years of exposure data, but sleep was measured once over one week and use was self-reported, so the order of events is unknown.
- Design
- —
- Participants
- 1,266
- Duration
- —
- Funding
- Several authors received research grants from the NIH or the Swiss National…
Long-term cannabis use was linked to measurably more disrupted sleep but not to worse self-rated sleep quality.
Cannabis is often promoted as a sleep aid, yet in people around 60, wrist sensors recorded more restless sleep among users. The data come from a US cohort study that followed more than 1,200 people from young adulthood for 35 years. The more cannabis-years someone had accumulated, the more often they lay awake for long stretches after falling asleep and slept in fragments. People who had used in the past month also more often slept over eight hours. A sleep quality questionnaire, however, showed no link with cannabis use. Which came first is unclear, because sleep was measured during a single week.
Conflict of Interest Disclosure: Several authors received research grants from the NIH or the Swiss National Science Foundation during the study.
Disclaimer: Research summaries are provided for informational purposes only and do not constitute medical advice. Always consult a qualified healthcare professional before making changes to your health routine.
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