Haven’t they already demonstrated that a 600 calorie per day diet for a short duration does this same thing?
While difficult, it seems less risky than drugs or bypass.
Difficult? That’s putting it mildly. Extreme hunger is painful and I guarantee anyone who is consuming only 600 calories a day is in starvation mode.
I doubt that it cures diabetes anyway. It may put it in remission for a while, but for many people that is all gastric bypass does. If one is diabetic, it is a lifelong condition. It can be managed (perhaps) but it can’t be cured. As we age, the condition will worsen no matter what one does, just as every system in our bodies eventually breaks down. For diabetics, the pancreas goes faster than the other organs.