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 ...

What does this all mean? Marijuana may increase testosterone in the short term, but more research is needed to understand the long-term effects. Does marijuana use lower levels of testosterone?

MRI scans showed less brain activation in heavy tokers performing tasks that tested their ability to temporarily hold a limited amount of information at the ready for immediate mental use, according ...

Add Yahoo as a preferred source to see more of our stories on Google. Here’s a great question we received when we spoke at the Kiwanis Club of Downtown Oklahoma City (thank you for the invitation!) ...

MOORHEAD — With an increase in recreational marijuana use, doctors are warning people about its negative health effects. Marijuana comes from the cannabis plant and is known for containing high ...

Heavy weed use appears to dull the brains of young adults, particularly affecting their short-term working memory, a new study suggests. MRI scans showed less brain activation in heavy tokers ...

Weed is no longer just for hippies or hip-hop stars — around 22 million people in the U.S. are cannabis users. But there’s still a lot we don’t know about the long-term effects of marijuana on men’s ...