Fat-oxidation

When fat is metabolised, the carbon atoms in triglycerides are exhaled as carbon dioxide — approximately 84% of the weight of fat leaves the body through the lungs. This article explains the biochemistry of fat oxidation and why the common misconceptions (fat turns to heat, muscle, or energy) are incorrect.

Fat loss involves lipolysis (breaking triglycerides into fatty acids) followed by beta-oxidation in mitochondria. The carbon atoms from fat leave the body primarily as exhaled CO2 — not sweat, urine, or heat. This article explains the complete biochemical pathway from calorie deficit to fat loss.

Green tea catechins (EGCG) have modest but real effects on thermogenesis and fat oxidation, supported by Cochrane-level evidence. This article reviews what clinical trials show about the magnitude, mechanisms, and practical use of green tea for weight management.