Over 40% of fatal crash victims had THC levels far above legal limits, showing cannabis use before driving remains widespread. The rate didn’t drop after legalization, suggesting policy changes ...

The American Medical Association has been sounding alarms about cannabis health risks, and one of the physicians leading that ...

(WXYZ) — In tonight’s Health Alert, marijuana is now legal in many states, including Michigan, and millions of Americans report using it daily. But new research ...

More than 2 in 5 drivers were driving while stoned when they died in car wrecks in a major Ohio county, a new study says. Coroner records show that nearly 42% of drivers who died in motor vehicle ...

The word “cannabis” refers to all products derived from the Cannabis sativa plant, which contains about 540 chemical substances. “Marijuana” refers to parts of or products from the plant containing ...

Even occasional cannabis use is linked to worse school performance and emotional distress for teens, finds a new study led by Columbia University.

Daily use of cannabis has now surpassed daily use of alcohol. Understanding how it affects mental functioning can help users calculate the cost-benefit ratio of daily use.

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