From what I have read, beta cells that have been destroyed cannot be regenerated, but damaged beta cells can be healed and recover lost functionality.

Also, from what I have read, a LC diet actually induces insulin resistance temporarily as a result of ketosis.

Once I reach my target weight, I plan to experiment a bit and see what happens as I gradually reintroduce a few more carbs to my diet. Not sure if I'll be "cured" but on 20 carbs a day I've been losing more than 3 pounds a week for the past 4 weeks so I am assuming that once I get where I want to be, I can eat a few more carbs without gaining any weight. I'm going to have to watch it closely and find the right balance. I don't want to go back to my old ways and wind up fat again.