The familiar sounds of your heart are made by the heart's valves as they open and close.
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Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.
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In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.
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Approximately 500,000 babies are born each year in the United States to teenage mothers.
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One way to reduce acid reflux is to lose two or three pounds. Most people lose weight in the belly area first when they increase exercise, meaning that heartburn can be reduced quickly by this method.