I'm not familiar with Barry Groves. I'll have to look him up. I know that I will never eat any other way. One of the best benefits of following my plan is stabilized blood sugar. Before when I tried to diet, my blood sugar levels would go way up and way down, giving me horrible mood swings. I was beginning to think I was bipolar! I read Suzanne Somers' books, then traced it back to Michal Montignac and I've been happy ever since.