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In 1864, the first barbiturate (barbituric acid) was synthesized.

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Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.

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The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.

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Human kidneys will clean about 1 million gallons of blood in an average lifetime.

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The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.

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Video: The Hypothalamus: The Body's Thermostat (Human Thermostat)

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