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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
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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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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.
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There are approximately 3 million unintended pregnancies in the United States each year.
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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.