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An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.

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There are more sensory neurons in the tongue than in any other part of the body.

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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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More than 4.4billion prescriptions were dispensed within the United States in 2016.

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

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