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Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.
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Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.
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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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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.
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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.