Marijuana has been used for medicinal purposes–relieving stress and pain and fighting hunger and nausea–for centuries if not millennia. But now, a pair of doctors in San Francisco claim that they've compiled reliable data showing that a certain compound in cannabis–cannabidiol–may actually cure cancer.
"We found this one compound had a specific effect on metastatic cancer cells, very aggressive tumor cells," McAllister says. Cannabidiol, the research appears to show, helps shut down receptors that inhibit cancerous cells from metastasizing. "We find when you treat with [cannabidiol], you down regulate the expression of this protein, and that inhibits the disease process."