I was doing a low GI diet with eye brow raising foods for some such as 35 grams of oats for breakfast and home made soda bread usually with pan seared Seabass / bream and low fat yogurt. With hours of exercise I got to a HbA1c of 42 / 41.
I checked all of the UK supermarkets (even the small ones) and whole food stores...turned every packet, all had carbs at around 70 grams per 100 - what a joke the mainstream is just sugar, even without adding. This is hardly surprising with knowledge to understand the constitution of grains. (I did the same exercise with rice, pasta and bread, no better).
I dropped the soda bread and changed the oats to strawberries, raspberries, blueberries, blackberries, hazelnuts, Brazil's, pecans, almonds, walnuts, 2 scoops of full fat Greek yogurt with cinnamon or ginger. This would sustain me from breakfast to dinner easily. This change moved my HbA1c to 35. Today I did a while baked Seabream (spiced), 6 scallops (special price at Morrisons) and a quarter cut up coconut, still stuffed now, so will for once make sure I do a lighter dinner. (I was really good because I had cooked up 2 Seabream, but have allowed my satiety signal to kick in, rather than my eyes).