For the first time in 50 years of keeping track, in 2024, teen girls in the U.S. used significantly more marijuana than boys in every grade. What's driving the shift? The much higher percentages of ...

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

The connection between smoking cigarettes and lung cancer risk has been clear for decades — but what about marijuana? As more U.S. states legalize recreational cannabis, new and developing research ...

As more states legalize marijuana, many people might be wondering if that means it is safe to use. While smoking tobacco is a known and well-studied cause of lung cancer, linking marijuana to cancer ...

Since 2009, California has listed marijuana smoke as being known to cause cancer, similar to tobacco smoke. The vote adds THC and pot smoke to the list of chemicals the state has judged to be known to ...