Heavy marijuana smoking may increase cancer risk, researchers warn

Recent studies from Keck Medicine of USC suggest a potential link between heavy marijuana use and an increased risk of lung, head, and neck cancers. Researchers emphasize that while the correlation is growing, the specific dose-response relationship remains unclear.
Why it matters
As marijuana legalization expands, understanding the long-term health implications of heavy usage is vital for public health policy and individual medical decisions.
As marijuana becomes legal in more states, many people assume it is relatively safe. But when it comes to cancer, the picture is far less clear. While tobacco smoking has long been established as a major cause of lung cancer, scientists are still working to understand exactly how marijuana affects cancer risk, according to Brooks Udelsman, MD, a thoracic surgeon with USC Surgery at Keck Medicine of USC.
The article presents medical research findings while acknowledging the limitations of current data and the need for further study.
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