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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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Excessive alcohol use costs the country approximately $235 billion every year.
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Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.
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Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.
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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.