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

Marijuana is made from the shredded and dried parts of the cannabis plant, including the flowers, seeds, leaves, and stems. It’s also known as pot, weed, hash, and dozens of other names. While many ...

Heavy marijuana smoking may raise the risk of lung cancer and several head and neck cancers, according to growing research, ...

If cannabis causes the munchies, how is it possible that pot smokers are thinner than nonsmokers?more A new study published in the American Journal of Epidemiology finds an intriguing connection ...

WASHINGTON, D.C. — Americans’ views of the effects of marijuana have worsened over the past two years, as slim majorities now say it negatively impacts both society as a whole (54%) and most people ...

Monica Romano was 13 when she first tried cannabis in the 1980s. It started out as a social way to spend a Friday night behind the bleachers at football games, she said, but it soon became a daily ...

A new UC San Diego study strengthens the growing body of evidence that marijuana use impacts adolescent brain development. Researchers observed slower gains in cognitive tests that measured memory, ...

More than a third of Michigan's teens have reportedly tried marijuana. And of that third, one in six become addicted.The ...

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 ...