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Did you know?
The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
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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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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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Russia has the highest death rate from cardiovascular disease followed by the Ukraine, Romania, Hungary, and Poland.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.