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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.
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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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Approximately one in four people diagnosed with diabetes will develop foot problems. Of these, about one-third will require lower extremity amputation.
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There are more sensory neurons in the tongue than in any other part of the body.