Subscribe to The Post Most newsletter for the most important and interesting stories from The Washington Post. Marijuana use ...

Monday, April 20 - also known as "4/20" - is approaching, and many residents might be wondering what's changed.

For example, just last month, an alarming new study claimed that long-term cannabis use may cause the frontal cortex to thin ...

Using medical marijuana appears to help people reduce the use of other medications, including opioids, sleeping aids and ...

Forbes contributors publish independent expert analyses and insights. Dr. Omer Awan is a practicing physician who covers public health. Despite the growing trend of legalizing marijuana across the ...

A new systematic review published in Brain, Behavior, and Immunity suggests that using cannabinoids does not have a single, ...

A new Massachusetts cannabis law could take effect right before 4/20, changing what people can legally buy and carry. Here’s ...

Studies show THC can influence multiple stages of memory formation, shaping not just what we remember—but how accurately we ...

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

Forbes contributors publish independent expert analyses and insights. Emily Earlenbaugh covers cannabis science and culture. As cannabis legalization continues to increase globally, researchers are ...

They are good for your mental health and most occasionally remember them, here is how marijuana effects dreams. Dreaming is a universal human experience involving a state of consciousness during sleep ...

Intoxicating THC products are now only available for legal purchase through licensed marijuana dispensaries. By Phillip Smith ...