A few years ago I was diagnosed with prediabetes (a1c of 6.1). I'm pretty skinny (6 feet tall, 150 lbs) and I don't have any family history of type 2 diabetes (besides my grandmother who developed it in her late 80s).
My current theory is that I have insulin resistance due to my sedentary programmer's lifestyle (i.e. sitting in front of computer 8 hours per day).
I've cut all cereal, bread, rice, pasta, soda, and processed sweets from my diet and switched to low GI foods like lentils and yogurt as my main carbs. I've also started walking every day for 30 minutes, but it barely moved the needle 6 months later (a1c of 6.0). I have not tried going pure keto because it sounds onerous but I might.
It's frustrating because most advice online around prediabetes and type 2 diabetes assumes the patient is overweight or obese and that they need to lose a significant % of body weight (which would be difficult/impossible for me). Anyone else out there has this issue? I know everyone is different, but just want to see if anyone else had this same issue and discovered any "hacks" or insights into this disease.
i trust https://nutritionfacts.org/ for general eating habits. he's a WFPB guy, and talks a lot about real studies, metastudies, science, etc., which i like.
some things you could try if you haven't already:
good luck.