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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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Asthma cases in Americans are about 75% higher today than they were in 1980.
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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
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There are more nerve cells in one human brain than there are stars in the Milky Way.
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Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.