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endocannabinoids

Anxiety Reduction: Exploring the Role of Cannabinoid Receptors

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Green and blue swirls

Caption: Cannabinoid receptor 1 (green) in the mouse brain. All cell nuclei appear blue.
Credit: Margaret Davis, National Institute on Alcohol Abuse and Alcoholism, NIH

Relief of anxiety and stress is one of the most common reasons that people give for using marijuana [1]. But the scientific evidence is rather sparse about whether there’s a biological explanation for that effect.

More than a decade ago, researchers set out to explore the link between marijuana and anxiety reduction, but the results of their experiments were inconclusive [2]. Recently, a team led by NIH-funded researchers at Vanderbilt University Medical Center in Nashville decided to tackle the question again, this time using more sensitive tools that have just become available in recent years.