"We used to think the brain was done developing at toddlerhood, but what we know now is that during adolescence there's a great deal going on in terms of brain maturation," said Vivian Faden, deputy director of the Division of Epidemiology and Prevention Research at the National Institute on Alcohol Abuse and Alcoholism.
"Teens don't have to die in a car crash for alcohol to have a negative effect," she said.
Over the past 10 to 15 years, advances in MRI imaging capabilities have made the once hidden world of the brain visible. That has enabled researchers to conclude that the teenage brain is constantly reorganizing, strengthening the pathways it uses most and pruning the unused ones.
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