It does, but it doesn't seem to be enough in many cases. And it's not as effective as fasting for a few days.
I had to inject insulin for a few weeks recently, then I fasted for a few days and was able to quit Insulin totally. After a fast of about 2 weeks I had blood sugar levels in the lower normal range and you wouldn't know I ever had a problem. Interleaving periods of fasting and a low-carb diet with 16h-8h intermittent fasting I lost about 20 kg in 2 months.
I had to inject insulin for a few weeks recently, then I fasted for a few days and was able to quit Insulin totally. After a fast of about 2 weeks I had blood sugar levels in the lower normal range and you wouldn't know I ever had a problem. Interleaving periods of fasting and a low-carb diet with 16h-8h intermittent fasting I lost about 20 kg in 2 months.