Though some say weed can improve mood and energy, there are negative effects on cognitive skills — especially in younger ...

Marijuana is far from a “silver bullet” for various illnesses, but it has some promising applications, scientists say ...

A key congressional committee is expected to issue a directive this week for federal agencies to study the “adequacy” of state marijuana laws and to assess methods for “preventing diversion of state ...

The Justice Department reclassified marijuana as a Schedule III drug, a shift that affects research and taxes but not legalization ...

While marijuana is becoming legal in some parts of the country, new research points out dangers, including just how addictive it can be for teens, and why it's more potent than ever before. This study ...

The sweet scent of baking cookies wafting from grandma's house may be mixed with a more pungent aroma these days. The smell of marijuana. The numbers of American seniors over age 65 who now smoke ...

When the U.S. Department of Justice moved to reclassify medical marijuana to a Schedule III drug on April 23, 2026, it set ...

SAN DIEGO — A new UC San Diego study strengthens the growing body of evidence that marijuana use impacts adolescent brain development. Researchers observed slower gains in cognitive tests that ...

A UC San Diego study looked at marijuana use and cognitive development in more than 11,000 teenagers over the course of several years.

Indiana has some of the most stringent cannabis laws in the country, but despite that, use among adults has consistently ...

A new congressional bill would provide $150 million in marijuana research funding for universities over five years, while ...