ArticleThe Permanente journal2018
Marijuana's Influence on Pain Scores, Initial Weight Loss, and Other Bariatric Surgical Outcomes.
Article in The Permanente journal, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 1 of them a synthesis that pooled it.
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The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
20 citing papers in PubMed, 1 synthesis or guideline pooled it, 45 citations in OpenAlex.
- Effects of Perioperative Cannabis Use on Bariatric Surgical Outcomes: a Systematic Review.Obesity surgery · 2021Pooled it
- Cannabis and liver transplant in the era of legalization: Effects of pretransplant cannabis use on postoperative opioid use and transplant outcomes.Liver transplantation : official publication of the American Association for the Study of Liver Diseases and the International Liver Transplantation Society · 2025Article
- Cannabis use and acute postoperative pain outcomes in older adults: a propensity matched retrospective cohort study.Regional anesthesia and pain medicine · 2025Article
- Marijuana and Its Implications in Breast Reduction Surgery Outcomes and Quality of Life: A Matched Analysis.Plastic and reconstructive surgery. Global open · 2024Article
- Perioperative Cannabis Use in Bariatric Patients: A Review of Outcomes and Proposed Clinical Pathway for Management.Obesity surgery · 2024Review
- Cannabis smoking and abdominal wall reconstruction outcomes: a propensity score-matched analysis.Hernia : the journal of hernias and abdominal wall surgery · 2024Article
- Cannabis use following bariatric surgery is associated with anxiety and maladaptive eating.Surgery for obesity and related diseases : official journal of the American Society for Bariatric Surgery · 2024Article
- Post-surgical cannabis use is associated with weight loss among individuals up to 4 years after bariatric surgery.Surgical endoscopy · 2023Article
- Marijuana, e-cigarette, and tobacco product use in young adults who underwent pediatric bariatric surgery.Surgery for obesity and related diseases : official journal of the American Society for Bariatric Surgery · 2023Observational
- Weight loss outcomes are not compromised in bariatric patients using cannabis.Surgical endoscopy · 2023Article
- Marijuana use does not affect weight loss or complication rate after bariatric surgery.Surgical endoscopy · 2022Article
- Weight stability in adults with obesity initiating medical marijuana treatment for other medical conditions.Journal of cannabis research · 2022Article
- Marijuana use does not affect the outcomes of bariatric surgery.Surgical endoscopy · 2021Article
- The Effects of Cannabis: Implications for the Surgical Patient.Plastic and reconstructive surgery. Global open · 2021Article
- Marijuana and Bariatric Surgery.Current psychiatry reports · 2021Review
- How to Measure Pain.Current oncology reports · 2020Review
- A Preliminary Study on the Influence of Cannabis and Opioid Use on Weight Loss and Mental Health Biomarkers Post-weight Loss Surgery.Obesity surgery · 2020Article
- Review
- Attitudes and Beliefs About Medical Usefulness and Legalization of Marijuana among Cancer Patients in a Legalized and a Nonlegalized State.Journal of palliative medicine · 2019Article
- High-Frequency Medical Cannabis Use Is Associated With Worse Pain Among Individuals With Chronic Pain.The journal of painArticle
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
8 authors at 5 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
introductionPain management can be challenging following bariatric surgery, and patients with obesity tend to increase opioid use after undergoing surgery. This report quantifies marijuana (MJ) use and its relationship to pain and other surgery-related outcomes in a population from a state that has legalized MJ.
methodsData were collected for consecutive patients undergoing weight reduction surgeries between May 1, 2014 and July 31, 2015. Demographics, preoperative comorbidities, medications, and perioperative opioid use were analyzed. The primary outcome evaluated was inpatient opioid pain medication use quantified using natural log morphine equivalents. Secondary outcomes included percentage of total body weight loss after three months, postoperative complications, and changes in medical comorbidities.
resultsA total of 434 patients, among whom 36 (8.3%) reported MJ use, comprised the study population. Perioperative opioid requirements were significantly higher in the MJ-user group (natural log morphine equivalents of 3.92 vs 3.52, p = 0.0015) despite lower subjective pain scores (3.70 vs 4.24, p = 0.07). MJ use did not affect percentage of 90-day total body weight loss, development of postoperative complications, or improvement in medical comorbidities.
conclusionPerioperative opioid use was significantly higher in the MJ-user group despite lower subjective pain scores. The difference in opioid requirements suggests an interaction between MJ use and opioid tolerance or pain threshold. The percentage of total body weight loss, improvement in medical comorbidity, and incidence of postoperative complications at 90-day follow-up were not affected by MJ use in this cohort analysis.
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