From your knowledge and experience?
I know that I simply can’t do sugar more than occasionally as for some reason it massively increases my symptoms which are otherwise fine. Exercise also really helps.
(For full disclosure I have a crappy HIT intolerance issue so while there is no food I completely can’t have (luckily), there is a long list of things I can’t get away with as part of my daily diet and this does not help eg. Dairy, most nuts except almonds, soya, lentils, eggs, avocado, citrus or fruits other than apples or berries, anything fermented, smoked/cured or aged, for example). Makes it harder to reduce carbs. I also love food.