An observational study in COPD, Insomnia and Cannabis, sponsored by National Jewish Health. Status unknown at 1 site in United States. Open to participants aged 21 Years to 80 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2019-03-13.
Sponsored by National Jewish Health · Observational
In Colorado, marijuana is currently used for both recreational and medicinal purposes.To learn more about the positive and negative long term medical effects of marijuana use. Information obtained during this study may identify new markers that influence the development of lung diseases such as COPD. The Investigators are also interested in learning more about the effects of marijuana use for insomnia and how it may or may not affect sleep.
In Colorado, marijuana is currently used for both recreational and medicinal purposes. The major active drug is tetrahydrocannabinol (THC). The most common route of use is through inhalation of the combustion products of the dried, buds/flowers from the female plant either rolled in paper (joint) or burned through a screen in a dry or water filled pipe (bong). Increasingly THC is consumed.
The side effects of the inhalation of burned leaves are controversial. The purpose of this proposal is to establish a prospective cohort of heavy marijuana users to evaluate positive and negative long term medical effects of marijuana use. As marijuana has also been reported for use to help treat insomnia, a sub-study will focus on how marijuana is used for sleep disorders and disturbances.
This study will enroll individuals that use marijuana to learn more about long-term health effects. The study involves one visit where participants will complete questionnaires, breathing tests, blood and urine collection. There is a sub-study where eligible participants will also complete an at-home sleep monitoring test. Participants will be contacted multiple times a year for long-term follow-up.
517 studies on the registry are indexed under Marijuana Abuse; 114 are open to participants now.
This study's planned enrollment of 2,000 is above the median of 100 across 78 observational studies indexed under Marijuana Abuse.
Browse Marijuana Abuse studies →National Jewish Health is the lead sponsor of 108 studies on the registry; 14 are open to participants now.
Counted across the registry records on this site, refreshed daily.
The Colorado investigators are recruiting 1,000 marijuana only users, 1,000 marijuana and tobacco users, and up to 250 non-marijuana users. The sleep sub-study will include up to 218 eligible participants.
Sleep sub-study:
Enrollment in the main cohort building study and a qualifying score on the Insomnia Severity Index questionnaire
Exclusion Criteria:
Sleep sub-study:
Individuals who use marijuana
Other: Marijuana
Individuals who use marijuana and also smoke cigarettes
Other: Marijuana
Individuals who do not use marijuana
This is an observational study looking at the effects of marijuana on health, including lung health and sleep.
Long term medical effects of marijuana use
Time frame: measured at baseline visit
Quality of sleep
physiological parameter and questionnaires
Time frame: measured at baseline visit
This study is status unknown, as verified in Oct 2018. You cannot join it, but the record below documents what was studied.
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