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Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.
Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.
Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
If all the neurons in the human body were lined up, they would stretch more than 600 miles.
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