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  • Writer's pictureNatasha Reyes

How Much Of The Fat Is Water?

Interestingly enough, when you lose fat, most of it comes out as carbon dioxide, through your lungs.

To be precise, about 80-85% of lost fat turns into carbon dioxide, while the other 15-20% turn to water.

For instance, if you lose 10 kg of fat, roughly 8 kg of it comes out through your lungs and the remaining weight is excreted in the form of urine/sweat.

Fun Fact

As a matter of fact, basically, everything you consume comes out as carbon dioxide!

Nearly every gram of carbohydrate, protein, fat, and even alcohol, gets converted to carbon dioxide and water, while the byproducts of the food leave the body as excrements.

The only exception for a nutrient that reaches your colon intact, is dietary fiber, which cannot be absorbed or digested but may help the digestive processes.

Everything else besides fiber is absorbed and then takes exit via the lungs!


Fat loss is simple, yet interesting - It only requires a caloric deficit but can make your body undergo drastic visual changes over a short period of time.

The process becomes even more interesting when you think about the fact that 85% of the weight that disappears from the scale, takes its exit through your lungs!

If you have any other interesting questions, let us know in the comments below!


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