Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Diverticulosis and Diverticulitis ?
    ### Response:
    Diverticula are small pouches that bulge outward through the colon, or large intestine. If you have these pouches, you have a condition called diverticulosis. It becomes more common as people age. About half of all people over age 60 have it. Doctors believe the main cause is a low-fiber diet.
    