The teenager's brain has a lot of developing to do: It must transform from the brain of a child into the brain of an adult. Some researchers worry how marijuana might affect that crucial process.

New research from UC San Diego sheds light on how cannabis affects youth and their ability to maintain attention, react and retain information.

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

A sweeping review of over 8,000 participants reveals how cannabis use during the teenage years may reshape the developing brain, raising urgent questions about long-term risks and early intervention.

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

Recent test results showed it can affect long-term learning and actually lower IQ ...

Young Twitter users favor marijuana. Teen Twitter chatter about “pot” is high and influential for the developing teenage brain. The popularity of social networking sites allows an increasingly younger ...

In my previous post, I promised this post would describe the minority of users whose lives are taken over by cannabis. Although less common, given how many people begin using cannabis during ...

Some experts say that marijuana is becoming more potent because of consumer demand, and that recreational users should beware of its effects, especially young people. The federal government is running ...

CHICAGO (AP) — New research suggests legalizing recreational marijuana for U.S. adults in some states may have slightly reduced teens’ odds of using pot. One reason may be that it’s harder and ...