Intermittent fasting almost always causes a calorie deficit, but it also creates ideal circumstances for fat loss. This is because it increases your insulin sensitivity. When you fast, your insulin levels lower, causing your body to access your stored fat easier. That’s how your body opts to use fat for energy, instead of muscle.
You might be familiar with this idea, because it is the same reason why people adopt low carbohydrate and ketogenic diets to drop body fat. Eating low carb will lower your insulin levels, but the fact is that fasting will drop them even lower. This makes fasting more powerful for fat loss. Another way fasting boosts fat loss is by increasing the amount of growth hormone your body produces. Studies have shown that production of growth hormone can decrease your amount of body fat. Finally, fasting has also been shown to increase production of norepinephrine, the fat burning hormone.
Hopefully some of these reasons give you some insight into why fasting has been all the craze the last few years. There is quite a lot of research now backing it up so if you are wanting to further you fat loss gains, then this may be something you want to try. There are a few different methods you can try to use when fasting to achieve greater fat loss. We will go over these on one of our next posts.