You might find this idea interesting - carbs are not the source of insulin resistance, they are the trigger, but only in the context of a high fat diet. The reason why is when we eat fat it ends up in our blood and inhibits the uptake, transmission and delivery of glucose and oxygen to the cells, resulting in elevated blood sugar, resulting in additional insulin, resulting in spikes and crashes in blood sugar levels and nasty metabolic swings. If we reduce our carb intake dramatically the problem goes away, but, the problem also goes away in the context of a high carb diet if we do not eat a lot of fat to begin with.
There's a lot of resistance to this idea, mostly IMO because we are inculturated to think fat is essential. Fat is certainly a more efficient (and profitable) way to distribute calories to society, they are approximately 10x more calorie dense than carbs. Most people also do not know that so called lean meats are about 60% of calories from fat, most likely because that information is not conducive to "good marketing".
Calories are not nutrition per se, but they are fuel in the everyday immediate sense, so conversion efficiency is important - when we eat foods (animal products) that use 30% (or more) of the calories in the food to metabolize the food, we are fueling inefficiently, with long term negative ramifications.
You might find this youtube vid interesting
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