Eating and mind clarity connections

Hello guys.
Since I remember I have some basics problem with my mind after a meal. Its something like migraine or just call it “mind opacity”, it shows up in disability to stay focused or to think clear. I always thinked that it is just my structure. But yesterday when I had no time to eat by the end of the day I understood how good does it feel. Thats why I think its just eating problem. Just for clarity, I’m on reduction, my diet system is carb back loading in which I eat three meals per day and two of them are only fat and protein based. I eat only healthy food devoided of sugars high processed foods and staff like that. Hope you’ll help and understand my english

When my diet makes me feel bad, I usually modify it. (I also do unusual diet experiments.)

If it’s worrying, it might be a good idea to check with a doctor.