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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 horizontal fraction bar was introduced by the Arabs.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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People about to have surgery must tell their health care providers about all supplements they take.
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People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.