Marijuana is far from a “silver bullet” for various illnesses, but it has some promising applications, scientists say ...

Subscribe to The Post Most newsletter for the most important and interesting stories from The Washington Post. Marijuana use seems to be more popular (or at least more openly talked about) than ever.

Though some say weed can improve mood and energy, there are negative effects on cognitive skills — especially in younger ...

Dr Daniel Amen cited brain scans that prove long-term cannabis smoking can cause issues relating to attention, memory, mood ...

Teen cannabis use is linked to slower cognitive growth, especially memory, with THC as a likely contributor during key ...

Adolescents who will eventually experiment with marijuana score higher on behaviors of intelligence. Teens who were exposed ...

Researchers find marijuana use in teens tied to slower gains in memory, focus, and thinking skills.

A study of more than 11,000 teens finds cannabis use tied to slower gains in memory, focus and thinking speed as well as ...

The largest study of adolescent brain development ever conducted in the United States has produced a finding that parents in ...

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 ...

The recreational use of marijuana has become more common in recent years. But some research has found that consuming cannabis could have negative effects on the body, especially the brain. A recent ...

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 ...