​Cannabis and its effect on mental health

​Cannabis is a well known drug which is known to alter the mind and body. It is also known as “pot”, “weed”, “ganja”, “marijuana” and many other slang terms. In this video, we have provided details on the composition of cannabis, its short and long term effects on brain and body, its advantages and disadvantages in medical and recreational, and its effect on individuals with different mental disorders. The video is intended to educate the general public about cannabis use and its effects. It is not intended to harm anyone’s emotions who is currently dealing with cannabis use problems. It is advised to contact a healthcare provider in case you are experiencing any symptoms or have additional concerns.
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This video was made by McMaster students Shefali Verma, Shilpa Tandon, and Niki Sadat Afjeh in collaboration with the McMaster Demystifying Medicine Program.

Subscribe to the McMaster Demystifying Medicine YouTube channel: https://www.youtube.com/c/DemystifyingMedicine

This video is provided for general and educational information only. Please consult your health care provider for Information about your health.

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Copyright McMaster University 2020
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#DemystifyingMedicine, #MentalHealth

References:

1. Gibbs, M., Winsper, C., Marwaha, S., Gilbert, E., Broome, M., & Singh, S. P. (2015). Cannabis use and mania symptoms: a systematic review and meta-analysis. ​Journal of affective disorders,​ 171​, 39–47. https://doi.org/10.1016/j.jad.2014.09.016

2. Grinspoon, Peter. “Medical Marijuana.” ​Harvard Health Blog,​ 15 Apr. 2020, www.health.harvard.edu/blog/medical-marijuana-2018011513085.

3. Hall, W., & Solowij, N. (1998). Adverse effects of cannabis. ​The Lancet​, ​352​(9140), 1611-1616. Hartman, R. L., & Huestis, M. A. (2013). Cannabis effects on driving skills. ​Clinical chemistry​,
59​(3), 478–492. ​https://doi.org/10.1373/clinchem.2012.194381

4. Hunt, G. E., Malhi, G. S., Cleary, M., Lai, H. M., & Sitharthan, T. (2016). Prevalence of comorbid bipolar and substance use disorders in clinical settings, 1990-2015: Systematic review and meta-analysis. ​Journal of affective disorders,​ ​206,​ 331–349. https://doi.org/10.1016/j.jad.2016.07.011

5. Kedzior, K. K., & Laeber, L. T. (2014). A positive association between anxiety disorders and cannabis use or cannabis use disorders in the general population–a meta-analysis of 31 studies. BMC psychiatry,​ ​14,​ 136. https://doi.org/10.1186/1471-244X-14-136

6. Lev-Ran, S., Roerecke, M., Le Foll, B., George, T., McKenzie, K., & Rehm, J. (2014). The association between cannabis use and depression: A systematic review and meta-analysis of longitudinal studies. ​Psychological Medicine,​ ​44​(4), 797-810. doi:10.1017/S0033291713001438

7. Lloyd, S. L., & Striley, C. W. (2018). Marijuana Use Among Adults 50 Years or Older in the 21st Century. ​Gerontology & geriatric medicine,​ ​4,​ 2333721418781668. https://doi.org/10.1177/2333721418781668

8. Mönckeberg B F. (2014). Los pro y contra de la legalización de la marihuana [Pros and cons of legalizing marijuana]. ​Revista chilena de pediatria​, ​85​(2), 229–237. https://doi.org/10.4067/S0370-41062014000200014

9. NIDA. 2020, April 8. Is marijuana a gateway drug?. Retrieved from https://www.drugabuse.gov/publications/research-reports/marijuana/marijuana-gateway-drug on 2020, November 15

10. Regier, D. A., Farmer, M. E., Rae, D. S., Locke, B. Z., Keith, S. J., Judd, L. L., & Goodwin, F. K. (1990). Comorbidity of mental disorders with alcohol and other drug abuse. Results from the Epidemiologic Catchment Area (ECA) Study. ​JAMA​, ​264​(19), 2511–2518.

11. Statista. “Marijuana Consumption by Age Canada 2019.” ​Statista​, 2 Sept. 2020, www.statista.com/statistics/587705/marijuana-consumption-canada-by-age/.

12. Shrivastava, A., Johnston, M., Terpstra, K., & Bureau, Y. (2014). Cannabis and psychosis: Neurobiology. ​Indian journal of psychiatry,​ ​56(​ 1), 8–16. https://doi.org/10.4103/0019-5545.124708

13. The Ministry of Health. “Health Effects of Cannabis.” ​Government of Canada​, 2017, www.canada.ca/content/dam/hc-sc/documents/services/campaigns/27-16-1808-Factsheet-Health- Effects-eng-web.pdf.