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There are more nerve cells in one human brain than there are stars in the Milky Way.
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People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
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HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.
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Your heart beats over 36 million times a year.
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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.