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Did you know?
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 average office desk has 400 times more bacteria on it than a toilet.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
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Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.