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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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Many people have small pouches in their colons that bulge outward through weak spots. Each pouch is called a diverticulum. About 10% of Americans older than age 40 years have diverticulosis, which, when the pouches become infected or inflamed, is called diverticulitis. The main cause of diverticular disease is a low-fiber diet.
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People about to have surgery must tell their health care providers about all supplements they take.
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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
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Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.