Well for my sister, she had her bowel disconnected because of diverticulitis so had a stoma bag and she had to eat a white bread bland low fibre diet, according to her doctors.
My accountant has a bad? Gaul bladder and she cannot tolerate fat amongst other things so she said she cannot do low carb.
These are just people in my immediate bubble, and I’m only going off what they tell me, there could be lots I have no idea,