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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%
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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.