Stephen Lankenau has spent years studying how people use cannabis in everyday life. As director of Drexel University’s ...

In part one of what marijuana really does to your brain, we traced the discovery of the cannabinoid receptor. Finding the receptor is the first step in determining how smoking causes a high. The next ...

Marijuana, also known as cannabis, has become much more common in recent years as more places have legalized its medical or ...

Much has been learned since the publication of the 1982 Institute of Medicine (IOM) report Marijuana and Health.* Although it was clear then that most of the effects of marijuana were due to its ...