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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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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
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The longest a person has survived after a heart transplant is 24 years.
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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.
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To prove that stomach ulcers were caused by bacteria and not by stress, a researcher consumed an entire laboratory beaker full of bacterial culture. After this, he did indeed develop stomach ulcers, and won the Nobel Prize for his discovery.