Marijuana is the third-most commonly used drug globally, after alcohol and nicotine. Its potency, measured by the concentration of THC, has steadily increased over the past few decades, raising the risk of users experiencing psychosis and addiction, according to an analysis published in the Lancet last week that was conducted by a team of mental health experts at the University of Bath’s Department of Psychology in the United Kingdom. The psychologists analyzed the association between the types of marijuana people use and addiction and mental health issues, drawing on 20 studies involving nearly 120,000 people.
“These results are important in the context of harm reduction which aims to minimise the negative consequences associated with drug use,” said lead author Kat Petrilli. “While the safest level of use for cannabis is of course ‘no use,’ it is important to acknowledge that a significant number of people across the world use cannabis regularly and to ensure they can make informed decisions that could reduce any possible harms associated with it.”
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