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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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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.

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To maintain good kidney function, you should drink at least 3 quarts of water daily. Water dilutes urine and helps prevent concentrations of salts and minerals that can lead to kidney stone formation. Chronic dehydration is a major contributor to the development of kidney stones.

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The familiar sounds of your heart are made by the heart's valves as they open and close.

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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.

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