19 Oct Long-Term Cannabis Use Linked to Poorer Sleep on Wearable Trackers, Even When Users Report Sleeping Well
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MedicalResearch.com Interview with:
Thanh-Huyen T. Vu, MD, PhD
Research Associate Professor
Department of Preventive Medicine
Northwestern University Feinberg School of Medicine, Chicago, Illinois
MedicalResearch.com: What is the background for this study? What are the main findings?
Response: Cannabis is widely used and legal in many states. Many people believe that it helps them sleep better. However, few studies have tested whether cannabis use is associated with sleep—particularly sleep that is measured using devices rather than self-reported. Our study asked adults about their cannabis use multiple times over 35 years. And more recently, we measured sleep duration and quality using a wearable device similar to an Apple Watch or Fitbit and asked people to tell us about their sleep.
We found that adults who used cannabis regularly over a number of years had sleep that we would describe as lower quality—more frequent awakenings and with less time during their sleep period spent asleep. However, when asked, adults who used cannabis and those who didn't reported similar sleep patterns—which wasn't the case when we measured it.
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