>As for protein, the author answered this: gluconeogenesis, unless broken by some pathway, does not equate to turning protein into pure sugar and does not get stored as fat. The Inuit and others subsist on the fats of animals with their protein and this buffers proteins. Also, the insulin reaction of protein is not the same as glucose. Insulin on glucose is an emergency response to keep glucose from poisoning us. We have a limited glycogen storage, but a vast fat storage, so the body turns glucose into fat to store it as a safer product – that quickly becomes too much and then disease begins to happen. This is caused by high carbohydrate. Insulin for protein ingestion is a reaction that is combined with multiple other hormones including growth hormone and glucagon which cause lean mass growth and leads to increased muscle mass. This does not cause fat storage and neither does fat (there are exceptions with broken metabolisms).
