A new review suggests cannabis may help mental health disorders.

Legal access to marijuana, medicinal or otherwise, is growing. In 2016, four states approved recreational use of the drug and four states passed laws related to medical-cannabis access, bringing the total number of states that allow some form of legal marijuana use to 28.

Scientists know that marijuana contains more than 100 compounds, called cannabinoids, that have biological effects on the body. Medically, cannabis can be prescribed for physical ailments like arthritis and cancer symptoms as well as mental health issues like PTSD, depression and anxiety.

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Alexandra Sifferlin ~ Time.com ~