Scientific guidelines for using cannabis to treat stress, anxiety and depression

In a first-of-a-kind study, Washington State University scientists examined how peoples’ self-reported levels of stress, anxiety and depression were affected by smoking different strains and quantities of cannabis at home.

Their work, published this month in the Journal of Affective Disorders, suggests smoking cannabis can significantly reduce short-term levels of depression, anxiety, and stress but may contribute to worse overall feelings of depression over time.

It marks one of the first attempts by U.S. scientists to assess how cannabis with varying concentrations of the chemical compounds tetrahydrocannabinol (THC) and cannabidiol (CBD)…