# University of Birmingham fat loss research

> Live situation record from CLSTR: https://clstr.news/situations/university-of-birmingham-fat-loss-research
> Updated: 2026-10-03T09:58:38.000Z. Sources: 6. Developments: 2.

Researchers from the University of Birmingham have detailed the biological mechanisms of fat elimination during weight loss. The process begins with lipolysis, where a calorie deficit triggers the breakdown of stored triglycerides into fatty acids to meet energy needs.

These fatty acids undergo beta-oxidation within the mitochondria, producing carbon dioxide and water as byproducts. Scientific findings clarify that the majority of fat mass is not excreted through sweat; instead, approximately 84 percent is converted into carbon dioxide and expelled through the lungs during exhalation. The remaining 16 percent is converted into water and excreted through sweat, urine, or other bodily fluids.

## Timeline

### 2026-10-03: Biological process of fat loss reveals most mass is exhaled

Research shows that approximately 84 percent of lost body fat is expelled from the body through breathing as carbon dioxide, with the remaining 16 percent leaving as water.

3 sources. https://clstr.news/cluster/biological-process-of-fat-loss-reveals-most-mass-is-exhaled

### 2026-10-02: University of Birmingham researchers explain how the body eliminates fat

Researchers from the University of Birmingham reveal that approximately 84 percent of lost body fat is expelled through the lungs as carbon dioxide during breathing, with the rest excreted as water.

3 sources. https://clstr.news/cluster/university-of-birmingham-researchers-explain-how-the-body-eliminates-fat

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Cite as: University of Birmingham fat loss research. CLSTR, https://clstr.news/situations/university-of-birmingham-fat-loss-research