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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
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If all the neurons in the human body were lined up, they would stretch more than 600 miles.
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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
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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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People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.