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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

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Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.

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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

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People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.

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