p.s., I posted this bit last week in my journal, related to protein and insulin;
http://ajcn.nutrition.org/content/66/5/1264.full.pdf
Okay, just for fun, from the insulin index study. Format here is insulin area under the curve for the listed food, followed by grams of protein and then the insulin area divided by the grams of protein.
cheese 5994 15 399
eggs 4744 19.6 242
beef 7910 42 188
fish 9350 56.3 166
Cheese and eggs look like the low insulin foods, beef and especially fish should be fattening, in comparison. Anybody actually believe this? At least, that cheese is less fattening than beef or fish? But when you look at insulin per gram of protein, things look a bit different. Twenty grams of protein as egg is less insulinogenic than 42 grams of protein as beef or 56 grams of protein as fish, this seems like a no-brainer. But suppose you're going to eat 30 grams of protein at a meal. Which will be least insulinogenic? 30 grams of protein from beef, fish, eggs, or cheese? It doesn't look very good for the cheese here.
Increasing protein increases insulin without increasing glucose intake--so of course the glucose-centric insulin index gets worse the more protein is added. Does this matter?
Cheese seems out of place, here--it has the lowest protein dose, but not the lowest insulin area under the curve. Maybe this answers a question I've wondered about--butter/milk fat increases the insulin response to carbohydrate more than olive oil or safflower oil. Does it increase the insulin response to a protein, as well?
Eggs-->beef-->fish--the numbers suggest the possibility that as protein is increased, the insulin area under the curve per additional gram of protein goes down as well. I wonder, if protein intake were put at an equal level, would there be much difference between these foods? Another possibility is that as calories from fat go down, insulin per gram of protein decreases as well.