How does the body dispose of fat?

Answer 1

Your body must dispose of fat deposits through a series of complicated metabolic pathways. The byproducts of fat metabolism leave your body: As water, through your skin (when you sweat) and your kidneys (when you urinate). As carbon dioxide, through your lungs (when you breathe out).

Total transit time of fat leaving the body averaged at 33 hours in men and 47 hours in women. Once fat is broken down during digestion, some of it gets used right away for energy, and the rest is stored. When your body needs extra energy, such as when you exercise or don't eat enough, it'll break down the stored fat for energy.

Where does the weight actually go? Your body breaks down fat cells when you lose weight. It uses the energy in those cells to fuel your activity levels and keep your body warm. Once fat cells have been metabolized, the byproducts leave your body in sweat, urine, or carbon dioxide when you exhale.

Your body must dispose of fat deposits through a series of complicated metabolic pathways. The byproducts of fat metabolism leave your body: As water, through your skin (when you sweat) and your kidneys (when you urinate). As carbon dioxide, through your lungs (when you breathe out).