Conditions & Recovery · ScienceDaily Cancer · July 10, 2026

Heavy marijuana smoking may increase cancer risk, researchers warn

Heavy marijuana smoking may raise the risk of lung cancer and several head and neck cancers, according to growing research, but many important questions remain unanswered. Scientists are still trying to determine how much marijuana use is enough to significantly increase cancer risk. Edibles have not been linked to lung cancer so far, while the long-term effects of vaping marijuana and secondhand

Originally published by ScienceDaily Cancer. We curate and add context; they did the reporting.

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