I have a friend who is having diverticulitis attacks every few months. They are very painful and she has been prescribed antibiotics, which lessen the pain but leave her weak, and it takes her some time to recover. She has always been very health conscious and in particular has plenty of fiber.
I introduced her to Soylent, and it has become part of her diet for the last month or so. She is now having an attack, and one of the first foods she plans to return to (not having had any food for a couple of days) is Soylent. She does add fiber.
My search for diverticulitis mentions on this site came up with only a few, so I thought I would start a topic if anyone wants to add to it.