While reading I’ve come across a new medical term
dysbiosis
“
an imbalance between the types of organism present in a person's natural microflora, especially that of the gut, thought to contribute to a range of conditions of ill health.
"in some conditions, such as Crohn's disease, a link with dysbiosis has been established"
https://www.healthline.com/health/diges ... plications
As always , talk with your doctor before treating yourself , even with dietary changes especially while on ICIs and or other cancer / and or medications .