Why protein helps with low blood sugar?

With hypoglycemia, what happens, is when the blood sugar goes up, insulin pushes it down, leaving you with low blood sugar. People with low blood sugar typically have a higher amount of insulin pushing blood sugar down, and there are no counter hormones to push the blood sugar back up.

Some people have this idea that the fuel that the body uses is either glucose, fat, or ketones. But, protein can be used as fuel too. Protein can be converted into glucose through a process called gluconeogenesis. Protein can act as a fuel in addition to replacing the protein in your body. This is why when you consume protein when you have low blood sugar, you start feeling better. If you have hypoglycemia and you were to consume carbohydrates, you might feel better for a minute, but then the insulin will kick the blood sugar back down. When you consume protein, you will stimulate some insulin, but at the same time, you will stimulate glucagon. Glucagon is the opposing hormone to insulin. Glucagon will raise the blood sugar, and insulin will lower it, creating a leveling effect.

Dr. Berg recommends a moderate amount of protein. He believe what may be best for those with hypoglycemia is to get on the healthy ketogenic diet combined with intermittent fasting.