Using marijuana just once or twice a month was associated with worse school performance and emotional distress for teens, ...

Once cannabis has hijacked the reward center, daily users have no destination in mind. Here's how parents maintain empathy for an addicted child.

Teens who see social media posts showing cannabis or e-cigarettes, including from friends and influencers, are more likely to later start using those substances or to report using them in the past ...

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 ...

A new study found that teens who start using cannabis before age 15 are more likely to require healthcare for mental and physical health problems in early adulthood. The corresponding study was ...