The findings follow an analysis of data collected by a Canadian phone app that gathered feedback offered by 1,300 headache sufferers and nearly 700 migraine sufferers who used marijuana to treat their head pain.
“We found that self-reported headache and migraine severity were reduced by nearly 50% from before to after cannabis use,” said study author Carrie Cuttler. She is an assistant professor in the department of psychology at Washington State University in Pullman, Wash.
But a lot of unanswered questions remain. For one, it’s not clear if pot was any better at cutting down headache pain than conventional medicine. “We didn’t directly compare cannabis to conventional treatments,” said Cuttler, “so we don’t know if it is more or less effective.”