Lipolysis (Fat Breakdown)
Lipolysis is the biochemical process in which stored triglycerides are broken down into fatty acids and glycerol for energy use.
Lipolysis is the first stage of fat burning: triglycerides stored in fat cells are broken down into free fatty acids, which are transported via the bloodstream to muscles and other tissues to be burned.
Lipolysis is regulated by several hormones. Adrenaline and noradrenaline accelerate it, while insulin is its strongest inhibitor. This means that high blood sugar levels and insulin secretion slow the release of fat from stores.
A calorie deficit is the most important prerequisite for lipolysis: the body turns to fat stores when energy from food isn't sufficient. Exercise accelerates lipolysis by raising adrenaline and increasing energy demand. Particularly in low- and moderate-intensity exercise, fat is the primary energy source.
It's important to understand that targeted fat burning isn't possible - the body releases fat from stores in a genetically determined order. Metabolic health, hormonal balance, and a moderate calorie deficit create optimal conditions for lipolysis. Prolonged, overly deep calorie deficit can paradoxically slow the process through stress hormones.
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Disclaimer: This page contains general health and wellness information and does not replace the advice of a doctor, dietitian, or other healthcare professional. Always consult your doctor before making significant changes to your diet or exercise routine, especially if you have underlying health conditions, are on medication, or are pregnant.
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