Yes, bananas can be good for diverticulitis. Bananas are a good source of fiber, which is important for maintaining regular bowel movements and preventing constipation, which can exacerbate symptoms of diverticulitis. However, it is important to note that during an acute flare-up of diverticulitis, a low-fiber diet is recommended to allow the inflamed areas of the intestine to heal. Once the acute symptoms subside, gradually increasing fiber intake, including from sources such as bananas, can help to prevent future flare-ups. It is always important to consult with a healthcare provider for personalized dietary recommendations for diverticulitis.