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Did you know?
The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.
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People about to have surgery must tell their health care providers about all supplements they take.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.
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The human body produces and destroys 15 million blood cells every second.