A tandem approach to shrinking brain tumors with two of marijuana’s key ingredients — tetrahydrocannabinol and cannabidiol —  has proven successful, according to the result of a newly published study.

Cannabis has enjoyed a meteoric rise in the United States as of late. Recreational use was recently approved in Oregon and Washington, D.C., and many more states are currently onboard for its letting people use it as medicine. This boom coincides with greater research into the ways in which cannabis acts on the brain’s cannabinoid receptors, alleviating pain, restoring appetite, and, now, shrinking tumors.