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Exploring the Association of e-Cigarette and/or Cannabis Use with Heavy Episodic Drinking among Ontario Adults

The use of e-cigarettes and cannabis are significantly associated with heavy episodic drinking among adults, indicating that those who engage in the dual use of e-cigarette and cannabis may be an important group to target with intervention programs. Click here to read the full study, published in Substance Use & Misuse. For more information on

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Comorbidity and Coaggregation of Major Depressive Disorder and Bipolar Disorder and Cannabis Use Disorder in a Controlled Family Study

In this cross-sectional study of 586 probands and 698 first-degree relatives, cannabis use disorder and bipolar disorder II in probands were associated with an independent increase in risk of cannabis use disorder in relatives; bipolar disorder I and major depressive disorder in probands were not significantly associated with cannabis use disorder in relatives. The risk

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Vaping May Open the Door to Cannabis Use in Teens

Adolescents who used e-cigarettes were significantly more likely to become new smokers of cannabis shortly thereafter, a cohort study found. Cannabis-naive adolescents reporting ever vaping at baseline were more than twice as likely to report also using cannabis when surveyed a year later (adjusted RR 2.57 vs nonusers of e-cigarettes, 95% CI 2.04-3.09), reported Ruoyan

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Clinical management of cannabis withdrawal

Cannabis withdrawal is a well-characterized phenomenon that occurs in approximately half of regular and dependent cannabis users after abrupt cessation or significant reductions in cannabis products that contain Δ9-tetrahydrocannabinol (THC). This review describes the diagnosis, prevalence, course and management of cannabis withdrawal and highlights opportunities for future clinical research. Read the full study published in

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Highly potent weed creating marijuana addicts worldwide, study says

Higher concentrations of tetrahydrocannabinol or THC — the part of the marijuana plant that makes you high — are causing more people to become addicted in many parts of the world, a new review of studies found. Read the full article from CNN here: https://amp.cnn.com/cnn/2022/07/25/health/marijuana-potency-addiction-study-wellness/index.html For more information on the International Academy on the Science

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Cannabinoids in Medicine: Limitless Hope or Hype?

Regardless of the type of substance-dependent addiction — whether alcohol, opiates, nicotine, or cannabinoids — the brain pathway is the same: the dopamine system. This system is also responsible for curiosity, desire, learning, and actions. Various substances lead to increased neurotransmitter release. The endocannabinoid system acts as a damper on this system. System stabilization is

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Notice of Retraction and Replacement

To the Editor On behalf of our coauthors, we write to respond to concerns raised about the methods and analyses for the Research Letter, “Association of Marijuana Legalization With Marijuana Use Among US High School Students, 1993-2019,” published in JAMA Network Open on September 7, 2021.1 These concerns were brought to our attention by readers

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Medical marijuana may trigger substance abuse

Obtaining a medical marijuana card may pose a risk for those who use cannabis products to treat pain, anxiety, or depression, according to a Massachusetts General Hospital study. In a significant minority of individuals, researchers found those at greatest risk of developing the addictive symptoms of cannabis use disorder (CUD) were seeking relief from anxiety

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WADA Executive Committee Approves 2023 Prohibited List

On September 23, the World Anti-Doping Agency’s (WADA’s) Executive Committee (ExCo) held its second meeting of the year in Sydney, Australia. ExCo members, some of whom attended in person and others virtually, were updated on WADA’s progress on key priorities, took a number of decisions – the main ones being summarized below – and made

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Doctors Inform Parents of Marijuana Use Linked to Youth Mental Health

Dr. Roneet Lev, with Scripps Hospital Emergency Room, wants to make sure parents and youth are making informed decisions and understand the risks. During Thursday’s event, doctors laid out the relationship between marijuana use and youth mental health. Lev warned that cannabis use is a suicide risk factor for people under the age of 25.

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