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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
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Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.
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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
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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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The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.