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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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After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.
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People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
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Cyanide works by making the human body unable to use oxygen.
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Long-term mental and physical effects from substance abuse include: paranoia, psychosis, immune deficiencies, and organ damage.