I asked my dr about this at the hospital and they just said everything in moderation. When I was first diagnosed I hardly ate as I was so paranoid that all the things I was eating were bad.
Now I am much better but I would say I have tried to overhaul my diet, firstly to see it made me feel better in myself and secondly so that my body is getting as much of the nutrients it needs to stay healthy. There is a really good dr who does podcasts called Dr Rhonda Patrick who I have listened to - she is very scientific in her language etc but I found her advice useful as she really explains what compounds in certains foods can help the body to be healthy.
I have also spoken with a dietician I know but tbh I don't agree with some of her advice such on things such as sweeteners. I would say food has become my way to feel in control but no in a eating less food way just that I am trying to look for nutritional value in the things I am consuming opposed to calories etc. I have been trying to eat less red meat, sugar and processed foods. I also try to have a couple of kale (contains sulphorofane which is apparently good for cellular health), banana, bluberry, oat milk and chia seed smoothies.
I would say obviously food is not magic and nobody knows what will happen tomorrow so I hope I have not offended anyone. This is just what has helped me feel sane whether it makes me healthier who knows. xx