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Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.
Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.
The average office desk has 400 times more bacteria on it than a toilet.
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.
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