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Originally Posted by Lolo70
I would still like to know what exactly the reasoning is behind not allowing Greek yoghurt. Just my personal interest. I prefer to see a scientific reason.
I'm more a curious researcher than scientist, but I suspect it has to do with the fact that dairy products are insulinemic (cause an insulin response in the body) not just because of carbs, but due to leucine content. Leucine is an amino acid that generates insulin reaction AND causes glucagon release to counter the insulin. One of the things Ideal Protein does is reduce the foods that cause insulin responses in the body. Yogurt is a food that happens to fall lower on the glycemic index, but higher on the insulinemic index (yogurt ranks near a Mars candy bar on the insulin index).