Fat consists of three elements: carbon, hydrogen and oxygen. When the triglycerides break down, it unlocks the carbon stored in the fat cells in a process that results in the creation of carbon dioxide and water. The chemical reaction creates heat as a byproduct, but that isn't how the fat leaves your body. The fat actually excretes as about 85 percent carbon dioxide through the lungs and 15 percent water through your urine, feces, sweat and tears.
To lose fat, create a calorie deficit so your body must reach into its fat stores for energy. A pound of fat is equal to 3, calories. If you eat to calories fewer per day and exercise off an additional to calories per day, you'll create a large enough deficit to lose 1 to 2 pounds per week. Exercise helps you lose fat more quickly because it increases your need for fuel and creates a larger calorie deficit.
When you consume more calories than you use, however, your body goes back to filling up the deflated fat cells, and you gain weight. How Does the Body Excrete Fat? By Andrea Boldt Updated April 23, Andrea Boldt. Andrea Boldt has been in the fitness industry for more than 20 years. Second, it stops putting away so much for storage. The brain signals fat cells to release the energy packages, or fatty acid molecules, to the bloodstream. The muscles, lungs and heart pick up these fatty acids, break them apart, and use the energy stored in the bonds to execute their activities.
The scraps that remain are discarded as part of respiration, in the outgoing carbon dioxide , or in urine. This leaves the fat cell empty and renders it useless. Over time, the body directly extracts the energy i. As a result, the body readjusts by decreasing the number and size of fat cells, which subsequently improves baseline metabolism , decreases inflammation, treats disease, and prolongs lives.
If we maintain this situation over time, the body reabsorbs the extra empty fat cells and discards them as waste, leaving us leaner and healthier on multiple levels. Portsmouth Climate Festival — Portsmouth, Portsmouth. We do not endorse non-Cleveland Clinic products or services. How on earth does this happen? Smaller amounts of energy are stored in your liver and muscles as glycogen. When you diet , you take in fewer calories than your body needs.
Because of this deficit, your body turns to fat reserves for energy. Your muscles first burn through stored glycogen for energy. They also recommend weightlifting and resistance training. Increasing muscle mass may help you burn more calories and raise your basic metabolic rate.
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