I think the answer lies here... "I dropped my fat intake from 75% of daily energy to between 15-20%. I removed all animal foods and oils from my diet. I focused on eating healthy fats from avocados, nuts, and seeds. I also added whole grains and legumes back into my diet (both of which I hadn’t eaten in nearly seven years since following a paleo approach) and an abundance of all types of fruits. Within 48 hours my insulin sensitivity started to return to normal. Within 1-2 weeks my carbohydrate intake was the highest it had been since being diagnosed with diabetes, and my insulin use dropped dramatically." If the damages to insulin sensitivity from 7 years of paleo/keto is permanent...don't think it would have been easily recoverable...are nerves and microvascular damages from high glucose excursions as easily recoverable?