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There is an epidemic of obesity in this country, health experts say. But what is obesity? How is it measured? Find out the answers to these questions and others by taking this quiz, based on information from the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK).
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Although millions of Americans have balanced disorders, it's sometimes difficult to diagnose them, because "dizziness" is such a broad term.
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Which habits can harm your vision? Learn about them by taking this quiz.
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