Diverticulosis and diverticulitis
About 10% of Americans over the age of 40 have small pouches in their colons that bulge outward through weak spots, like an inner tube that pokes through weak places in a tire. Each pouch is called a diverticulum. More than one pouch is referred to as diverticula. About half of all people over the age of 60 have these pouches, or diverticulosis.
If the pouches become inflamed or infected, the condition becomes diverticulitis or diverticular disease. Diverticulitis is also common, occurring in 10-25% of all people with diverticulosis.