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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
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About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.
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Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%
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In 1864, the first barbiturate (barbituric acid) was synthesized.
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Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.