When is a grumpy teen more than just moody? Why do teens develop this way, and how can we stay alert to red flags while also ...

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 ...

INDIANA – Adolescence is a time often marked by mood swings, intense emotions, and confusion. Stress, anxiety, and even ...

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 ...

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 ...

There are five distinct eras, or epochs, in the lifespan of a human brain, according to a new study from researchers at the University of Cambridge in the United Kingdom, published in Nature ...

In a study led by researchers from Mass General Brigham, children with more adverse prenatal exposures (APEs) showed higher rates of behavior problems that persisted into mid-adolescence, faster ...

Think your teenager is rude, lazy or constantly pushing boundaries? An expert says many behaviours parents worry about are actually linked to normal brain development. Does your teen have 'attitude', ...