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Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.

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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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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

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To combat osteoporosis, changes in lifestyle and diet are recommended. At-risk patients should include 1,200 to 1,500 mg of calcium daily either via dietary means or with supplements.

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Vaccines prevent between 2.5 and 4 million deaths every year.

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