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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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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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The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.
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Illicit drug use costs the United States approximately $181 billion every year.
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Vaccines prevent between 2.5 and 4 million deaths every year.