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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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The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.
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Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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Most women experience menopause in their 50s. However, in 1994, an Italian woman gave birth to a baby boy when she was 61 years old.