Diverticular disease: diverticulosis vs. diverticulitis Diverticular disease means you have polyps (small growths) called diverticula in your gut. These polyps can exist without causing any symptoms and without you even knowing they’re there. This is called diverticulosis.
https://health.clevelandclinic.org/what-foods-should-you-eat-and-avoid-on-a-diverticulitis-diet/

