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Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.
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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
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Cyanide works by making the human body unable to use oxygen.
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There are 20 feet of blood vessels in each square inch of human skin.
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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.