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There are 60,000 miles of blood vessels in every adult human.
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.
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