05/05/2025
Interesting!
When you lose weight, 84% of the fat you lose leaves your body through your breath as carbon dioxide.
Not through sweat, urine, or waste like many people think.
Researchers found that even among 150 health professionals, 98% didn’t know this. Most believed fat turns into energy or muscle, but that’s not the case. Fat is broken down into carbon dioxide and water. You breathe out the carbon dioxide, and the water leaves your body through urine, sweat, or other fluids. If you lose 10 kilograms of fat, about 8.4 kilograms are exhaled and 1.6 kilograms are lost as water. The idea that you can just breathe harder to lose weight is also wrong.
You can only breathe out more carbon dioxide by moving your muscles. Simple activities like standing, walking, cleaning, or cooking increase your metabolic rate, meaning you burn more energy and lose more weight.
For example, walking triples your resting metabolic rate, helping you exhale more carbon dioxide. The food you eat—whether carbs, fat, or protein—breaks down in your body into carbon dioxide and water, and this chemical process doesn’t change no matter what diet you follow. In simple terms: you lose weight by eating less "fuel" than your body needs and by moving more.
It’s not about special pills, fancy diets, or breathing tricks. It's basic chemistry. Every kilogram you gain or lose can be tracked by looking at what goes in, such as food and oxygen, and what comes out, such as carbon dioxide, water, and a little bit of waste. To lose fat, eat sensibly and move more so your body can break it down and remove it through breath and fluids.
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When weight disappears, the fat has to go somewhere. Our endocrinologist explains exactly where that is.