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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
The average adult has about 21 square feet of skin.
This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
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.
Liver spots have nothing whatsoever to do with the liver. They are a type of freckles commonly seen in older adults who have been out in the sun without sufficient sunscreen.