We rarely worry about marijuana. So why is it still a Schedule I drug?

On August 11th, the Drug Enforcement Administration announced its decision to keep marijuana classified as a Schedule I drug.

The federal government has historically referred to this category as the “most dangerous” group of substances, including drugs like heroin and bath salts.

As a resident physician specializing in mental health, I can't make much sense of this.

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Nathaniel P. Morris ~ ScientificAmerican.com ~