Heavy marijuana smoking may raise the risk of lung cancer and several head and neck cancers, according to growing research, ...

Marijuana laws have shifted dramatically over the past decade. What federal authorities still classify as illegal is now legal for medical use in 33 states plus Washington, D.C., and recreationally ...

Smoking weed poses cancer risks beyond the lungs. Here’s what to know. Heavy marijuana use may come with a two- to eight-fold higher risk of head and neck cancer. Inhaling smoke of any kind exposes ...

The unmistakable scent drifts through parks, bus stops, and city streets long before anyone sees who lit up. And not everyone ...