Did you know?

More than one-third of adult Americans are obese. Diseases that kill the largest number of people annually, such as heart disease, cancer, diabetes, stroke, and hypertension, can be attributed to diet.

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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.

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The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.

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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

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Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.

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