Intermittent fasting: Does cutting carbs or calories improve metabolism?

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Intermittent fasting is not only a useful tool for weight loss, it’s also shown to have many benefits for metabolic health – independent of weight loss. Yet many people may find intermittent fasting to be a challenge, especially if following the 5:2 version of the diet where calories are severely restricted two days a week.
But my latest study shows that you don’t need to severely restrict your calories to get the metabolic benefits of intermittent fasting. Even just restricting the number of carbs you eat twice a week may be enough to improve your metabolic health.
Intermittent fasting appears to be so beneficial for health because of the way it alters our metabolism.
After a meal, our body enters the postprandial state. While in this state, our metabolism pushes our cells to use carbohydrates for immediate energy, while storing some of these carbs as well as fat for later use. But after several hours without food, in the postabsorptive “fasted” state, our metabolism switches to using some of our fat stores for energy.
In this regard, intermittent fasting ensures a better balance between the sources it uses for energy. This leads to improved metabolic flexibility, which is linked with better cardiometabolic health. In other words, this means lower risk of cardiovascular disease, insulin resistance and type 2...
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