The normal insulin levels has a lot to do with food consumed, and diffent foods require more insulin because of the way the body digests the different carbs and proteins. Beef and pork take more, white rice takes more and noodles, not the instant stuff, takes less. Amaranth and quinoa take less, but wheat flours take more. The level of exercise and the caloric intake all have a bearing. The wisest thing to do is have your three year old eat about the same amount of calories every two hours and small amounts. But I know that is tough to do.
The same as everyone else 80-120.
The same as anyone else. 80-120.