Wow ,I do the same life style thing. I don't eat all day then have 1 meal at night. I have cut out sucrose and all grain products. After a year of c. dif. my small intestine is damaged. I was finally diagnosed to have sucrase deficiency . All grains with or w/o gluten cause extreme upper abdominal bloating. So I guess I also have isomaltase deficiency . I can tolerate white rice and wild rice mix. I make a drink of glucose powder and water when I exercise. This increases my energy . I have also read about round up in our food supply. Any way I find my problem socially isolating.