Hey John, sorry to butt in but, I'm actually reading about the positive benefit intermittent fasting has on the brain in renewing neurons as well. Amazing. Good luck. I love that you're trying it!

John, I did the Optifast program at the university in the 1990's and got along fine with the liquid diet, but I drank by the clock and ate Jello with no fat cream cheese as a snack. After a 30 pound loss, I went on a limited food reentry and had stomach pain all the time between meals. I couldn't maintain the limited diet, so I gave it up in short time, as they had no maintenance program at the time. The stress in my marriage helped me gain back the weight and more. Since eating a diabetic diet and giving up sugar I have done quite well except that I don't go over four hours without eating and I don't eat snacks that have many calories. I will not tolerate stomach pain which I have had off and on throughout my marriage, but no longer have to deal with that. So I know not to try fasting because I am sure the stomach pain would happen and I would worry about low blood sugar again. It is more frightening than high blood sugar, In my opinion. I would walk in front of moving vehicles and threw a couple of mental tantrums because people didn't understand what was happening to me.
I was so sick after a blood sugar test that my mother had to dress me after a shower. I could not function. I drove a car home on the freeway with a blood sugar of only 35 and don't know how I managed to get home. Every four hours there will be nutritious food in my stomach regardless of my weight. Maybe I will lose a pound now and then. But my body is not equipped for fasting, I think. Dorisena