Adolescents who start using cannabis early and often are more likely to need health care for both mental and physical problems as they enter adulthood, according to a new study led by McGill ...

Long-term cannabis use, especially when started young, may carry risks involving dependence, mental health and cognition even ...

A teenager who uses cannabis only occasionally might not see it as a big deal. Their parents might not either. But new national data suggests that even infrequent use is linked to significant problems ...

(NewsNation) — Marijuana use has increased heavily in popularity over the past decade, but not everyone believes the U.S. is in a good place with its recreational drug habits. The New York Times ...

For years, the opioid crisis has been the leading concern when it comes to substance use. There’s certainly good reason for this emphasis, but as a result, the harms associated with other drugs have ...

Add Yahoo as a preferred source to see more of our stories on Google. As marijuana use becomes legal and more accepted across America, more seniors are developing unhealthy relationships with the drug ...

Cannabis users suffer mental health problems twice as often as non-users, a study published Monday by Statistics Netherlands said. "The percentage of people with a less good mental health is two times ...

The growing legal use of recreational and medical cannabis has generated an increased concern for potential side effects from long-term use, particularly regarding problems with memory and sleep.