Zsírfelhasználást

Zsírfelhasználást refers to the process by which the body utilizes stored fat as an energy source. This physiological mechanism is crucial for maintaining energy balance, particularly during periods of fasting, prolonged exercise, or when carbohydrate intake is restricted. The body breaks down triglycerides, the primary form of stored fat in adipose tissue, into glycerol and fatty acids. Glycerol can be converted into glucose in the liver through a process called gluconeogenesis, while fatty acids are transported to various tissues and cells where they undergo beta-oxidation. Beta-oxidation breaks down fatty acids into acetyl-CoA molecules, which then enter the citric acid cycle to produce adenosine triphosphate (ATP), the cell's main energy currency. The extent of zsírfelhasználást is influenced by several factors, including diet, physical activity levels, hormonal status, and genetics. Increased physical activity and a diet lower in carbohydrates generally promote greater fat utilization. Hormones like insulin, glucagon, adrenaline, and cortisol play significant roles in regulating fat mobilization and utilization. Understanding zsírfelhasználást is important in contexts such as weight management, athletic performance enhancement, and metabolic health.