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History, science, and politics of international cannabis scheduling, 2015–2021

On 21 April 2021, the herbal medicines “cannabis” and “cannabis resin” definitively ceased to appear in Schedule IV of the 1961 Single Convention on narcotic drugs (C61), where they had been listed since the entry into force of that treaty in 1964. The process to scientifically review and reschedule Cannabis-related controlled drugs had been launched by the World Health Organization (WHO) on 2 December 2016 and went through a number of hindrances until it finally got submitted to a unique voting process on 2 December 2020 at the United Nations Commission on narcotic drugs (CND).

The Chemistry of Cannabis and Cannabinoids

The science of cannabis and cannabinoids encompasses a wide variety of scientific disciplines and can appear daunting to newcomers to the field. The encroachment of folklore and ‘cannabis culture’ into scientific discussions can cloud the situation further. This Primer Review is designed to give a succinct overview of the chemistry of cannabis and cannabinoids.

Medical cannabis and cognitive performance in middle to old adults treated for chronic pain

Authors: Sharon R Sznitman, Simon Vulfsons, David Meiri, Galit Weinstein Published in Drug and Alcohol Review September 2020 Abstract Introduction and aims: Cannabis exposure is becoming more common in older age but little is known about how it is associated with brain health in this population. This study assesses the relationship between long-term medical cannabis…

Preliminary Assessment of Medical Cannabis Consumption by Cancer Survivors

This study indicates that cancer survivors may indeed consume cannabis for symptom relief, and not merely for recreational purposes. More research is needed to study the adequate role that cannabis may have for treating symptoms associated with cancer survivorship.

Endocannabinoids Inhibit the Induction of Virulence in Enteric Pathogens

Authors: Melissa Ellermann, Alline R. Pacheco, Angel G. Jimenez, Regan M. Russell, Santiago Cuesta, Aman Kumar, Wenhan Zhu, Gonçalo Vale, Sarah A. Martin, Prithvi Raj, Jeffrey G. McDonald, Sebastian E. Winter, Vanessa Sperandio Published in Cell October 2020 Abstract Summary Endocannabinoids are host-derived lipid hormones that fundamentally impact gastrointestinal (GI) biology. The use of cannabis…

A pediatric patient with autism spectrum disorder and epilepsy using cannabinoid extracts as complementary therapy: a case report

Authors: Juliana Andrea Ponton, Kim Smyth, Elias Soumbasis, Sergio Andres Llanos, Mark Lewis, Wilhelm August Meerholz & Robert Lawrence Tanguay Published in Journal of Medical Case Reports September 2020 Abstract   Background The pharmacological treatment for autism spectrum disorders is often poorly tolerated and has traditionally targeted associated conditions, with limited benefit for the core…

Acute effects of naturalistic THC vs. CBD use on recognition memory: a preliminary study

Authors: Tim Curran , Hélène Devillez , Sophie L. York Williams and L. Cinnamon Bidwell Published in Journal of Cannabis Research  2020 Abstract The ratio of Δ9-tetrahydrocannabinol (THC) to cannabidiol (CBD) varies widely across cannabis strains. CBD has opposite effects to THC on a variety of cognitive functions, including acute THC-induced memory impairments. However, additional…

Cannabis use is associated with a lower risk of diabetes in chronic hepatitis C-infected patients (ANRS CO22 Hepather cohort)

Authors: Tangui Barré, Marie Libérée Nishimwe, Camelia Protopopescu, Fabienne Marcellin, Fabrice Carrat, Céline Dorival, Elisabeth Delarocque‐Astagneau, Dominique Larrey, Marc Bourlière, Ventzislava Petrov‐Sanchez, Mélanie Simony, Stanislas Pol, Hélène Fontaine, Patrizia Carrieri on behalf of the ANRS/AFEF Hepather study group Published in Journal of Viral Hepatitis August 2020 Abstract Chronic hepatitis C virus (HCV) infection is a…

A Survey Exploring the Relationship Between Cannabis Use Characteristics and Sexual Function in Men

Authors: Hriday P. Bhambhvani BS, Alex M.Kasman MD, Genester Wilson-King MD, Michael L. Eisenberg MD Published in Sexual Medicine September 2020 Abstract Introduction Cannabis is the most commonly used drug in the United States; however, the effects of cannabis use on male sexual function are poorly understood. Aim To characterize the contemporary landscape of cannabis…

Frequent Cannabis Use and Cessation of Injection of Opioids, Vancouver, Canada, 2005-2018

Authors: Hudson Reddon, Kora DeBeck, M Eugenia Socias, Stephanie Lake, Huiru Dong, Mohammad Karamouzian, Kanna Hayashi, Thomas Kerr, M-J Milloy Published in American Journal of Public Health August 2020 Abstract Objectives To evaluate the impact of frequent cannabis use on injection cessation and injection relapse among people who inject drugs (PWID). Methods Three prospective cohorts…

Cannabis Consumption Used by Cancer Patients during Immunotherapy Correlates with Poor Clinical Outcome

Authors: Gil Bar-Sela, Cohen Idan, Salvatore Campisi-Pinto, Gil M Lewitus Published in Cancers August 2020 Abstract Cannabis or its derivatives are widely used by patients with cancer to help with cancer symptoms and treatment side effects. However, cannabis has potent immunomodulatory properties. To determine if cannabis consumption during immunotherapy affects therapy outcomes, we conducted a…

Cannabinoid and Terpenoid Doses are Associated with Adult ADHD Status of Medical Cannabis Patients

Authors: Jeffrey Y. Hergenrather, Joshua Aviram, Yelena Vysotski, Salvatore Campisi-Pinto, Gil M. Lewitus, David Meiri Published in Rambam Maimonides Medical Journal January 2020 Abstract Objective The aim of this cross-sectional questionnaire-based study was to identify associations between the doses of cannabinoids and terpenes administered, and symptoms of attention deficit hyperactivity disorder (ADHD). Methods: Participants were adult patients…