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The human body produces and destroys 15 million blood cells every second.
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There are more sensory neurons in the tongue than in any other part of the body.
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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
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People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.