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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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Your heart beats over 36 million times a year.
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Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%
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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
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Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.