Insulin acts as a fat thermostat, directing calories into fat stores. When insulin is high, your body stores more energy as fat regardless of total calories. People taking insulin as medication gain weight as a side effect.
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Insulin, when it goes up, when you increase insulin, people gain weight, right? We know this because we give people insulin as a drug, and there is one side effect that every person who takes insulin knows about— that's weight gain. So if you give insulin, you are gaining weight, which is really that ratcheting up of your body fat thermostat. When you give insulin, you haven't given anybody calories. There's no calories in that insulin. You haven't increased their exercise or decreased their exercise. When you give insulin, you don't tell them, oh, you should exercise less, right? Insulin is just a hormone that ratchets up your body fat thermostat. Your body now says, well, I shouldn't be, I need to be 180 pounds. How am I gonna do that? I'm going to suck away more calories, right? Into body fat because I don't have enough. So, You eat your normal meals, but your body now with the insulin sucks all your energy, all those calories into body fat. Now you have no calories for the rest of your body, right? Because that's if insulin is high.
If insulin is high, you start pumping calories, get stored into body fat.