Not to ruin your high, but habitually smoking marijuana has been known to take a toll on the body. It can irritate the lungs, ...

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

Dr Daniel Amen cited brain scans that prove long-term cannabis smoking can cause issues relating to attention, memory, mood ...

Subscribe to The Post Most newsletter for the most important and interesting stories from The Washington Post. Marijuana use seems to be more popular (or at least more openly talked about) than ever.

For years, the narrative around marijuana has leaned heavily into its potential as a “natural” wellness product. However, a wave of research from late 2025 and early 2026 is providing a ...