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The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.
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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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Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.
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More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.