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After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.

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In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

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On average, the stomach produces 2 L of hydrochloric acid per day.

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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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Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.

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