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Daily marijuana use linked to increased risk of deadly head and neck cancers


Smoking marijuana daily for years may increase the risk of potentially deadly head and neck cancers, a new study found.

Cannabis use disorder is diagnosed when a person has two or more of such symptoms as craving weed, becoming tolerant to its effects, using more than intended, using marijuana even though it causes problems in life, using it in high-risk situations, experiencing withdrawal and being unable to quit, according to the US Centers for Disease Control and Prevention. “On average, people with cannabis use disorder smoke about a joint today and do so for at least a couple years, if not longer,” said Califano, who coauthored an editorial published Thursday in JAMA Otolaryngology–Head & Neck Surgery in conjunction with the new study. Other risk factors include poor oral hygiene;gastroesophageal reflux disease, or GERD; a weakened immune system; and a diet low in fruits and vegetables.

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