Humans have been cultivating the cannabis plant for thousands of years, but we know very little about when it was first used for its psychoactive properties.
A coroner in Louisiana believes he may have investigated the first recorded case of a THC overdose.
"The study opens our eyes to the hidden effects of cannabis," said the lead author of a new study.
"They had stomach aches, they were nauseous, dizzy. One of them was all but passed out."
A single dose of cannabidiol was found to ease brain abnormalities in people with psychosis.
A new meta-analysis found that heavy pot use may not impact the brain long-term.
Cannabis might reduce pain but not by a lot, and not by much more than a placebo.
Ingesting marijuana cuts down on the carcinogens but it's harder to control the high.
A substance with many names—K2, spice, synthetic marijuana—ropes in users by comparing itself to cannabis, but it's infinitely more unsafe.
Signiﬁcant obstacles discourage pharma companies from devoting the power needed to develop a patentable drug to take the plant's place.
Mostly, that we were right about weed back in 1993—it's not great for you.