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Did you know?
There are 60,000 miles of blood vessels in every adult human.
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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.
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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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The familiar sounds of your heart are made by the heart's valves as they open and close.
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The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.