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Did you know?
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.
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Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.
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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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On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.