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Cyanide works by making the human body unable to use oxygen.
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The average adult has about 21 square feet of skin.
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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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One way to reduce acid reflux is to lose two or three pounds. Most people lose weight in the belly area first when they increase exercise, meaning that heartburn can be reduced quickly by this method.
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.