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Did you know?
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.
Did you know?
Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.
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Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
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The human body produces and destroys 15 million blood cells every second.
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In 1844, Charles Goodyear obtained the first patent for a rubber condom.