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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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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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There are 60,000 miles of blood vessels in every adult human.
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.