What Figure 16 aims to show is that persons with extreme insulin sensitivity – the opposite to IR – can eat as many grams of carbohydrate each day as they wish without ever becoming fat. In this theoretical model someone with extreme insulin sensitivity would be able to eat up to 500 g per day of carbohydrate (left edge of diagram) – about two and a half times what I think is necessary – while retaining a BMI at the bottom of the normal range. Most elite endurance athletes are probably in this group. A person with mild IR would be able to eat perhaps up to 250 g of carbohydrate per day while
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