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  • Title: Cannabinoids and bladder symptoms in multiple sclerosis.
    Author: Kim-Fine S, Greenfield J, Chaput KH, Robert M, Metz LM.
    Journal: Mult Scler Relat Disord; 2021 Sep; 54():103105. PubMed ID: 34216995.
    Abstract:
    BACKGROUND: Research on the health benefits of cannabis has been limited because use remains restricted or illegal in most countries. Medical cannabis has been legal in Canada since 2001 and recreational use became legal in October 2018. While there are data that support a biological mechanism by which cannabinoids can impact various other symptoms of MS, the evidence of effectiveness of cannabis as a treatment for bladder symptoms remains unsettled. We conducted an exploratory study to describe the current trends of cannabis product consumption among people with MS (PwMS) and their association with perceived benefits on MS symptoms. METHODS: A cross-sectional survey study of PwMS, recruited from the MS Clinic in Calgary, Alberta, Canada was undertaken. Logistic regression analyses were performed to assess the associations between cannabis consumption and improvement in bladder function symptoms. RESULTS: There were 775 respondents out of 2899 PwMS contacted by email. Among respondents, 734 reported cannabis use in the past 3 months. There were 275 (37.5%) respondents who reported cannabis use in the prior 3 months, and 73.8% of these reported at least weekly use of cannabis. Among all users, 78.1% reported a primary medical or therapeutic indication for consumption. The most common modes of cannabis consumption were oral-edible (69.0%) and smoked (57.1%), while 59.3% used more than one mode of consumption and 2.6% used five different modes. The most common reasons for cannabis use were for sleep (58.3%), pain (51.5%), relaxation (44.4%), muscle spasms (40.2%), anxiety (33.8%) and depression (22.9%). Among the 19 participants who reported bladder symptoms as a main reason for cannabis use, 89.5% reported "better" bladder symptoms when using cannabis. Cannabis consumption in the past 3 months was associated with a two-fold increased odds of reporting improvement in urinary frequency, urinary urgency, bladder leakage and wetness, pad use and bladder emptying. CONCLUSIONS: Cannabis is commonly used in this survey study of personal cannabis use among PwMS. Patterns of use, dosing, frequency and mode of delivery are diverse among survey respondents. This pilot study provides some initial glimpses into real world therapeutic use of cannabinoids among PwMS for bladder symptoms.
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