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Medical treatments Certain medications and medical procedures can also cause numbness of the mouth or jaw

Here are some of the ways smoking impacts your blood: Reduced oxygen levels: Cigarette smoke contains carbon monoxide, which binds to hemoglobin in your red blood cells and reduces their capacity to carry oxygen

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In the study, Tammemagi and his colleagues surveyed more than 600 nonsmokers from the Detroit area -- half of whom had been diagnosed with chronic sinusitis -- about their exposure to secondhand smoke at home, at work, in public places (such as bars, restaurants, and bowling alleys), and in private social settings over a five-year period

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