A systematic review reveals adolescent cannabis use alters brain structure, elevates addiction risk, and impacts cognitive ...

Adolescence is widely thought to be a time when the brain trims away excess neural connections, refining circuits through synaptic pruning. New research now suggests this view may be incomplete.

(Willie B. Thomas/DigitalVision/Getty Images) A long-term study of more than 11,000 children and teens has linked ...

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

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

Teens who start using cannabis before age 15 are more likely to use the drug often later in their lives. They are also more likely to develop mental and physical health problems in young adulthood ...

For decades, my colleagues and I advanced the premise that early substance use—nicotine, alcohol, or cannabis (or other addicting drugs)—interferes with critical maturation stages, particularly ...

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.

What’s going on in your teen’s brain? Are they going to be okay? Parental influence is crucial to systems that shape lifelong ...

Marijuana use among teenagers is entering a new phase—one shaped not only by changing laws but also by shifting perceptions of risk. As legalization expands across the United States, researchers and ...

According to a recently released study involving more than 11,000 teens who were tracked from the age of 9-10 until they were ...

Add Yahoo as a preferred source to see more of our stories on Google. SHANGHAI, CHINA - SEPTEMBER 21: A 8-meter-high and 6-meter-long artwork "ByMyCellf" designed by Brazilian artist Froio Boniconte ...