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A foul mouth

Bad teeth and gums aren't just signs of poor oral hygiene. Your mouth could be saying nasty things about your heart and bones.

In 2010, Scottish researchers reporting in the British Medical Journal found that tooth brushing lowers the risk of heart disease. Compared with twice-a-day brushers, people who brushed less frequently had a 70% greater risk of heart disease or death from heart disease. Tooth loss also can signal osteoporosis. Missing teeth may mean jawbone density can no longer support a mouthful of pearly whites.

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