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Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.
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There are more sensory neurons in the tongue than in any other part of the body.
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Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.
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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
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In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.