Advocating for Evidence Based Marijuana Policy
Tag Archives: adolescent use
High-Potency Cannabis Linked to Brain Damage, Experts Warn
by Liam Davenport
Medscape Psychiatry & Mental Health, December 15, 2015
WTR-RI Research & Analysis Team Comment:
This study, Effect of high-potency cannabis on corpus callosum microstructure was conducted by Silvia Rigucci, MD, Department of Neurosciences, Mental Health and Sensory Organs, Sapienza University of Rome, Italy in collaboration with colleagues at the Department of Psychosis Studies, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, UK.
Results indicate that regular use of today’s high potency strains of marijuana “is associated with disturbed callosal microstructure organization in individuals with and without psychosis”. (see abstract at http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=10044996&fulltextType=RA&fileId=S0033291715002342)
As the Medscape summary article notes, “Smoking high-potency, or “skunk”-like, cannabis may cause white matter damage in the corpus callosum, thus interfering with communication between the right and left hemispheres of the brain …” (see summary at article at http://www.medscape.com/viewarticle/855971?nlid=93987_2051&src=wnl_edit_medn_psyc&uac=238333HT&spon=12&impID=924712&faf=1#vp_1).
Teens with medical marijuana cards much likelier to say they’re addicted, but few teens have them
- University of Michigan. (2015, July 23). Teens with medical marijuana cards much likelier to say they’re addicted, but few teens have them. ScienceDaily. Retrieved July 24, 2015 from http://www.sciencedaily.com/releases/2015/07/150723140207.htm
- ScienceDaily Summary:
- Teens using marijuana for medical reasons are 10 times more likely to say they are hooked on marijuana than youth who get marijuana illegally, a new study shows. The study is the first to report on a nationally representative sample of 4,394 high school seniors and their legal or illegal medical marijuana use as it relates to other drug use. In the study, 48 teens had medical marijuana cards, but 266 teens used medical marijuana without a card.
- Carol J. Boyd, Philip T. Veliz, Sean Esteban McCabe. Adolescents’ Use of Medical Marijuana: A Secondary Analysis of Monitoring the Future Data. Journal of Adolescent Health, 2015; 57 (2): 241 DOI: 10.1016/j.jadohealth.2015.04.008
Adolescents who view medical marijuana ads more likely to use the drug, study finds
- RAND Corporation. (2015, July 6). Adolescents who view medical marijuana ads more likely to use the drug, study finds. ScienceDaily. Retrieved July 9, 2015 from http://www.sciencedaily.com/releases/2015/07/150706154858.htm
- ScienceDaily Summary:
- A new study raises questions about whether there is a need to revise prevention programming for youth as the availability, visibility and legal status of marijuana changes. The report found that adolescents who saw advertising for medical marijuana were more likely to either report using marijuana or say they planned to use the substance in the future.
- Elizabeth J. D’Amico, Jeremy N. V. Miles, Joan S. Tucker. Gateway to Curiosity: Medical Marijuana Ads and Intention and Use During Middle School.. Psychology of Addictive Behaviors, 2015; DOI: 10.1037/adb0000094
WTR-RI Research and Analysis Team Note:
Data drawn from 2014 Colorado Healthy Kids and 2014 Monitoring the Future studies show substantial increases in post-legalization Denver Area last month youth use of marijuana when compared to national averages. The table attached below shows differences in 8th grade use versus national average of approximately 350%; the ratios for 9th, 10th and 12th grades are approximately 40, 50 and 42 percent respectively.