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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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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
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Thyroid conditions may make getting pregnant impossible.
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The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.