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Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.
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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
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All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.
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HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.