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 ...

Sara Ruiz/ / Getty Images/iStockphoto 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 ...

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There's an idea out there of what a drug-addled teen is supposed to look like: impulsive, unconscientious, smart, perhaps - but not the most engaged. While personality traits like that could signal ...

The brain has five major structural phases during the human lifespan and doesn't reach adulthood until age 32, a new study suggests. Scientists determined that brain development is defined by four ...

For many years, research on cannabis and the brain has focused mainly on teenagers and young adults. Scientists worried that ...