The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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Lower drug doses for elderly patients should be used first, with titrations of the dose as tolerated to prevent unwanted drug-related pharmacodynamic effects.
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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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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
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Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.