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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 1885, the Lloyd Manufacturing Company of Albany, New York, promoted and sold "Cocaine Toothache Drops" at 15 cents per bottle! In 1914, the Harrison Narcotic Act brought the sale and distribution of this drug under federal control.
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There are 20 feet of blood vessels in each square inch of human skin.
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Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.
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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").