Question: Why does it take time to be fat-adapted when our body already knows how to burn fat?

So the body does need time to get fat-adapted because yeah, the body knows how to burn fat, but fat adaptation is not about the body knowing how to burn fat, it's about the body increasing the expression of enzymes involved in burning fat. So everything that you do in the body requires enzymes. Enzymes are proteins that need to be made. It's going to increase enzymes involved in fat digestion and metabolism if you've been eating fat, and because it's expensive to do that, it's going to cut back on them if you haven't been eating fat.

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DISCLAIMER: I have a PhD in Nutritional Sciences and my expertise is in performing and evaluating nutritional research. I am not a medical doctor and nothing herein is medical advice.

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