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 ...

A UC San Diego study looked at marijuana use and cognitive development in more than 11,000 teenagers over the course of several years.

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

New research on marijuana's impact on personal health shows that it's not just bank accounts that can shrink due to long-term recreational use. The drug may also decrease brain volume. “Long-term ...

People who regularly use marijuana experience changes in their brain structure and function, but it's not clear that cannabis is the cause, a new study finds. Researchers found specific differences in ...

Marijuana's main mind-altering ingredient was detected in nursing mothers' breast milk in a small study that comes amid evidence that more U.S. women are using pot during pregnancy and afterward.

A major U.S. study has found that regular marijuana use during adolescence is linked to slower development in memory, attention, language and processing speed. Researchers say tetrahydrocannabinol ...

This is the last post in a three-part series. Parts 1 and 2 covered marijuana’s brain mechanism and seven short-term effects. Now, we’ll explore marijuana's long-term effects on the brain. Marijuana's ...