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More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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.