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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.
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Human kidneys will clean about 1 million gallons of blood in an average lifetime.
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People about to have surgery must tell their health care providers about all supplements they take.
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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.