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On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.
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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.
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The average office desk has 400 times more bacteria on it than a toilet.
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A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.