I think this might explain Crankin's treatment: https://www.bowelcanceraustralia.org...icular-disease

"Traditional advice was to eat a high-fibre diet.

However, it is now thought that a low-fibre or low-residue diet can ease the symptoms when there is a flare up or suspected inflammation.

This reduces the likelihood of waste matter brushing against and irritating the affected bowel wall."

You pretty much have to listen to your own body when following different recommended treatment plans. Sometime we react positively to the wrong treatment. I know my body doesn't always follow protocol! I am not at all suggesting either one is right or wrong. It is what it is.