Diverticulosis, otherwise known as "diverticular disease", is the condition of having diverticula in the colon which are outpocketings of the colonic mucosa and submucosa through weaknesses of muscle layers in the colon wall. These are more common in the sigmoid colon, which is a common place for increased pressure. This is uncommon before the age of 40 and increases in incidence after that age.

Diverticulitis develops from a condition called diverticulosis. If you're older than 40, it's common for you to have diverticulosis - small, bulging pouches (diverticula) in your digestive tract. In the United States, more than 50 percent of people older than 60 have diverticula.

Diverticulitis develops from a condition called diverticulosis. If you’re older than 40, it’s common for you to have diverticulosis - small, bulging pouches (diverticula) in your digestive tract.