Here’s how it works. Using cannabis heavily and regularly may raise the risk of head and neck cancers, a new study finds. The research looked at 20 years' worth of medical records from more than ...

Using marijuana daily for years may raise the overall risk of head and neck cancers three- to five-fold, according to a new study that analyzed millions of medical records. “Our research shows ...

A new study suggests that cannabis, the most commonly used illicit substance worldwide, is associated with an increased occurrence of head and neck cancer. A study from the USC Head and Neck ...