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The use of salicylates dates back 2,500 years to Hippocrates's recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.

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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.

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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.

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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

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