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More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
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Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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Cyanide works by making the human body unable to use oxygen.
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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.