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.

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 ...

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

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

Dr. Francesca Filbey, a professor of psychology at the University of Texas at Dallas, has studied the effects of cannabis on ...

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

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

A new UC San Diego study strengthens the growing body of evidence that marijuana use impacts adolescent brain development.

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