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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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The horizontal fraction bar was introduced by the Arabs.
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People about to have surgery must tell their health care providers about all supplements they take.
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To maintain good kidney function, you should drink at least 3 quarts of water daily. Water dilutes urine and helps prevent concentrations of salts and minerals that can lead to kidney stone formation. Chronic dehydration is a major contributor to the development of kidney stones.
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Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.