Hunger is the body telling you it NEEDS to enter into apohagy I think it's called, where it breaks down collected sugars and fats in order to return to efficiently functioning normal mode. If you were to pay attention to your body, you wouldn't eat during this time, you fast...some of the ketosis guys understand this better then others. But fasting should be normal.
And diabetes is just the need to detox poisons related to the chemistry of inorganically and poisoned sugars.
It's perfectly curable with organic foods, and more careful attention on the consumption of toxins so rampant in todays foods.
Normal organic fruit sugars will never be a problem once the toxins are gone. It is synthetic processed crap that causes the problems.
Like it or not, he can either suffer for the rest of his life listening to big pharma lies, or make informed healthy food choices and never have a problem. Having a garden to grow your own heirloom seeds would be ideal here, but bottle gardens and hydroponics can be made to work even in small spaces.
"Diabetes is just the need to detox poisons".
His pancreas doesn't work. It's genetic. My cousin and his young child have it, too. Thank you for your concern.