Previously in this series, we've discussed the role of cellular energy excess, inflammation, brain insulin resistance, and micronutrient status in insulin resistance. In this post, I'll explore the role of macronutrients and sugar in insulin sensitivity.
Carbohydrate and Fat
There are a number of studies on the effect of carbohydrate:fat ratios on insulin sensitivity, but many of them are confounded by fat loss (e.g., low-carbohydrate and low-fat weight loss studies), which almost invariably improves insulin sensitivity. What interests me the most is to understand what effect different carbohydrate:fat ratios have on insulin sensitivity in healthy, weight stable people. This will get at what causes insulin resistance in someone who does not already have it.
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