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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
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Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).
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Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.
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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.