Objective To systematically assess credibility and certainty of associations between
cannabis, cannabinoids, and cannabis based medicines and human health, from …

This review provides an overview of the changing US epidemiology of cannabis use and
associated problems. Adults and adolescents increasingly view cannabis as harmless, and …

Importance Cannabis use has increased, but there are few studies on frequent and daily
cannabis use among US adults. Individuals who engage in higher frequency use may suffer …

Background. Cannabis use is common in North America, especially among young people,
and is associated with a risk of various acute and chronic adverse health outcomes …

We assess the current and describe possible future public health impacts of the legalisation
of cannabis production, sale, and use in the Americas. First, we describe global patterns of …

Background: The Canadian government legalized non-medical cannabis use by adults in
October 2018 in order to minimize associated harms and re-direct profits from criminals …

Background The effect of cannabis legalization in Canada (in October 2018) on the
prevalence of injured drivers testing positive for tetrahydrocannabinol (THC) is unclear …

Text messaging while driving is considered dangerous and known to produce injuries and
fatalities. However, the effects of text messaging on driving performance have not been …

Aims To determine whether and to what extent acute cannabis intoxication increases motor
vehicle crash risk. Design Study 1 replicates two published meta‐analyses, correcting for …

BACKGROUND Cannabis is the most prevalent illicit drug identified in impaired drivers. The
effects of cannabis on driving continue to be debated, making prosecution and legislation …