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Marijuana is currently illegal under federal law, but it is legal for medical and recreational use in a growing number of states. There is a growing body of research suggesting cannabis can be an effective treatment for a variety of medical conditions, including chronic pain, nausea, and seizures.

However, there are also some potential risks associated with marijuana use, including impaired driving, psychosis, and addiction. Here, STAT covers the scientific, legal, and political issues related to cannabis, CBD and medical marijuana.

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