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Marijuana use associated with impaired sleep quality

Date:
June 2, 2014
Source:
American Academy of Sleep Medicine
Summary:
Marijuana use is associated with impaired sleep quality, research suggests. Results show that any history of cannabis use was associated with an increased likelihood of reporting difficulty falling asleep, struggling to maintain sleep, experiencing non-restorative sleep, and feeling daytime sleepiness. The strongest association was found in adults who started marijuana use before age 15; they were about twice as likely to have severe problems falling asleep, experiencing non-restorative sleep and feeling overly sleepy during the day.

A new study suggests that marijuana use is associated with impaired sleep quality.

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Results show that any history of cannabis use was associated with an increased likelihood of reporting difficulty falling asleep, struggling to maintain sleep, experiencing non-restorative sleep, and feeling daytime sleepiness. The strongest association was found in adults who started marijuana use before age 15; they were about twice as likely to have severe problems falling asleep (odds ratio = 2.28), experiencing non-restorative sleep (OR = 2.25) and feeling overly sleepy during the day (OR = 1.99). Results were adjusted for potential confounders including age, sex, race/ethnicity and education.

"Current and past marijuana users are more likely to experience sleep problems," said lead author Jilesh Chheda, research assistant at the University of Pennsylvania in Philadelphia, working with Dr. Michael Grandner, the senior author on the study. "The most surprising finding was that there was a strong relationship with age of first use, no matter how often people were currently using marijuana. People who started using early were more likely to have sleep problems as an adult."

The research abstract was published recently in an online supplement of the journal Sleep and will be presented June 4, in Minneapolis, Minnesota, at SLEEP 2014, the 28th annual meeting of the Associated Professional Sleep Societies LLC.

The study involved adults ranging in age from 20-59 years who responded to the 2007-2008 National Health and Nutrition Examination Survey (NHANES). A history of drug use was reported by 1,811 participants. Cannabis use was assessed as any history of use, age at first use and number of times used in the past month. Sleep-related problems were considered severe if they occurred at least 15 days per month.

Although the design of this study did not allow for an examination of causality, the results suggest that initiation of marijuana use in adolescence may impart a higher risk for subsequent insomnia symptoms, or it may mean that those who begin using earlier are more likely to experience insomnia for other reasons, such as stress. Insomnia may even be one of the reasons people start (or continue) use, though this evidence suggests that it is probably not effective if they are still experiencing problems.

"Marijuana use is common, with about half of adults having reported using it at some point in their life," said Chheda. "As it becomes legal in many states, it will be important to understand the impact of marijuana use on public health, as its impact on sleep in the 'real world' is not well known."

According to the National Institute on Drug Abuse, marijuana use among young people has been increasing since 2007, which may be associated with increased public debate over the drug's legal status. The federal government considers marijuana a Schedule I substance that has no medicinal uses and a high risk for abuse. However, Colorado and Washington have legalized marijuana for adult recreational use, and 21 states have passed laws allowing its use as a treatment for certain medical conditions.


Story Source:

The above story is based on materials provided by American Academy of Sleep Medicine. Note: Materials may be edited for content and length.


Cite This Page:

American Academy of Sleep Medicine. "Marijuana use associated with impaired sleep quality." ScienceDaily. ScienceDaily, 2 June 2014. <www.sciencedaily.com/releases/2014/06/140602102013.htm>.
American Academy of Sleep Medicine. (2014, June 2). Marijuana use associated with impaired sleep quality. ScienceDaily. Retrieved March 3, 2015 from www.sciencedaily.com/releases/2014/06/140602102013.htm
American Academy of Sleep Medicine. "Marijuana use associated with impaired sleep quality." ScienceDaily. www.sciencedaily.com/releases/2014/06/140602102013.htm (accessed March 3, 2015).

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