{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,6]],"date-time":"2026-05-06T13:14:56Z","timestamp":1778073296690,"version":"3.51.4"},"reference-count":102,"publisher":"Oxford University Press (OUP)","issue":"2","funder":[{"DOI":"10.13039\/100000002","name":"National Institutes of Health","doi-asserted-by":"publisher","award":["R01DA048817"],"award-info":[{"award-number":["R01DA048817"]}],"id":[{"id":"10.13039\/100000002","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100012788","name":"VA Portland Health Care System","doi-asserted-by":"crossref","id":[{"id":"10.13039\/100012788","id-type":"DOI","asserted-by":"crossref"}]},{"name":"US Department of Veteran Affairs RRD Merit Review","award":["RX004822"],"award-info":[{"award-number":["RX004822"]}]},{"name":"US Department of Veteran Affairs RRD Merit Review","award":["RX005371"],"award-info":[{"award-number":["RX005371"]}]},{"DOI":"10.13039\/100019294","name":"VHA Office of Rural Health","doi-asserted-by":"publisher","award":["PROG-0000095"],"award-info":[{"award-number":["PROG-0000095"]}],"id":[{"id":"10.13039\/100019294","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026,4,21]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Study Objectives<\/jats:title>\n                    <jats:p>Insomnia and chronic pain commonly co-occur, with Veterans more likely to experience both compared to the general population. As opioid prescribing practices change, there is growing interest in the use of cannabis for pain management and insomnia yet little data evaluating these potential associations.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>405 Veterans recruited nationally who were prescribed long-term opioid therapy for chronic pain and had a positive urine drug screen for THC in the month prior were enrolled. Participants were stratified into \u201cnone\u201d (n\u2009=\u2009118), \u201cmild\u201d (n\u2009=\u2009140), and \u201cmoderate\/severe\u201d (n\u2009=\u2009147) insomnia groups via the Insomnia Severity Index. THC consumption over the prior ~3-6\u00a0months was determined from nail samples, assayed for Carboxy-THC (pg\/mg) via liquid gas chromatography\/mass spectroscopy.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Bivariate analyses compared demographic and clinical factors based on insomnia severity classifications. Relative to patients without impaired sleep, those classified as having mild insomnia had significantly worse pain interference, anxiety, depression, and PTSD symptom severity. These relationships were further amplified in the moderate\/severe sleep impairment group, which also reported significantly greater pain intensity. However, no group differences were found related to Carboxy-THC concentration, reflecting previous consumption characteristics. Multivariable linear regression examined variables associated with insomnia severity; PTSD, depression, and pain interference were associated with insomnia, with no effect of cannabis consumption.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>These findings suggest that in a sample of Veterans prescribed long-term opioid therapy with past month cannabis use, THC consumption may not be associated with insomnia symptoms. Future research should examine a possible threshold effect of cannabis dose on insomnia symptoms.<\/jats:p>\n                    <jats:p>Statement of Significance Two commonly endorsed reasons for cannabis use are sleep disturbances and pain management, conditions that often co-occur, present with increasing frequency in Veterans and military service members and are further complicated by opioid therapy. Leveraging a national cohort of n\u2009=\u2009405 Veterans with active cannabis use, chronic pain, and long-term opioid therapy, the present study examined correlates of self-reported insomnia severity. Factors associated with insomnia were age, pain interference, depression, post-traumatic stress disorder, and anxiety. Cannabis use, assessed via liquid chromatography tandem mass spectrometry for Carboxy-THC (pg\/mg) on nail clippings, was not associated with insomnia. These data fill a critical gap, reporting the association between cannabis use, insomnia, and related factors, in a relevant and understudied patient population.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1093\/sleepadvances\/zpag026","type":"journal-article","created":{"date-parts":[[2026,2,21]],"date-time":"2026-02-21T12:37:41Z","timestamp":1771677461000},"source":"Crossref","is-referenced-by-count":0,"title":["Association between cannabis use and insomnia symptoms among veterans with chronic pain"],"prefix":"10.1093","volume":"7","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6992-6851","authenticated-orcid":false,"given":"Jonathan E","family":"Elliott","sequence":"first","affiliation":[{"name":"Research Service, VA Portland Health Care System , Portland, OR ,","place":["United States"]},{"name":"VISN 20 Northwest Mental Illness Research, Education and Clinical Center (MIRECC), VA Portland Health Care System , Portland, OR ,","place":["United 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,","place":["United States"]},{"name":"Department of Psychiatry, Oregon Health & Science University , Portland, OR ,","place":["United States"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Meike","family":"Niederhausen","sequence":"additional","affiliation":[{"name":"Oregon Health & Science University \u2013 Portland State University School of Public Health, Oregon Health & Science University , Portland, OR ,","place":["United States"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Travis I","family":"Lovejoy","sequence":"additional","affiliation":[{"name":"Center to Improve Veteran Involvement in Care, VA Portland Health Care System , Portland, OR ,","place":["United States"]},{"name":"Department of Psychiatry, Oregon Health & Science University , Portland, OR ,","place":["United States"]},{"name":"VHA Office of Rural Health, Veterans Rural Health Resource Center , Portland, OR ,","place":["United 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