He is the father of Home testing of sugar levels. Here, he speaks about benefits of Low Carb High Fat diet for treating diabetics. He himself has been living on just 30 grams carbohydrates (in ketogenic range) for decades, much against the misconception that brain needs 100 grams of glucose from CARBS. He is a Type 1 diabetic, injecting insulin and still maintaining A1C below 5, though the beloved ADA says it is risky to reduce below 6.
So, let's believe the doctor who is treating his patients the way he lives as a diabetic and not believe what ADA has to say about high fat