What do you consider "whole carb" then? Whole grain bread or potatoes have a comparable or higher insulin index, and even if the glycemic index may be lower, th

What do you consider "whole carb" then? Whole grain bread or potatoes have a comparable or higher insulin index, and even if the glycemic index may be lower, the glycemic load is the same. Really what you need to do in order to avoid this effect is to add fat and protein into your meal. As for what "most humans ate for most of history", it's not really clear-cut. https://en.wikipedia.org/wiki/Pleistocene_human_diet https://en.wikipedia.org/wiki/Pleistocene_human_diet