A recent study performed at New York University has found a link between passive, or second-hand, smoking and hearing loss in teens. The study, which was fully published in the Archives of Otolaryngology, analyzed over 2,000 teens. Regular blood tests were performed to test if cotinine, a by-product chemical of nicotine, was in the body. The teens were also given a number of hearing tests and repeatedly asked if they believed their hearing abilities had changed.
At the end of the study, those teens with high levels of exposure to second-hand smoke were almost twice as likely to have a form of hearing loss as those were not exposed to it.
More studies are needed to account for untested information, such as the teens’ exposure to excessive noise or whether they smoked themselves.
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