I am CKD4 with a eGFR of 27. I had my right kidney surgically removed 18 months ago due to cancer directly related to bladder cancer (bladder removed 30 months ago). I'm looking forward to the live session with a renal dietitian on Jan. 31st. I've previously been advised to eat low-fiber foods (corn flakes and rice crispies, for instance, rather than Fiber One or raisin bran). Do kidneys have trouble dealing with fiber?