What does ketogenesis mean?
Ketogenesis is the biochemical process in which the liver converts fatty acids into ketone bodies, including acetoacetate, beta-hydroxybutyrate, and acetone. These compounds provide alternative sources of energy, especially for the brain and muscle, when carbohydrate use is limited. Ketogenesis becomes more prominent during prolonged fasting, very-low-carbohydrate diets, prolonged endurance exercise, and some conditions involving carbohydrate deprivation or altered metabolism. Although the word is often discussed alongside ketosis, it specifically names the production process, whereas ketosis names the physiological state associated with elevated ketone levels. In nutrition and medical research, ketogenesis is also discussed in relation to energy balance, glucose regulation, and the use of fat during exercise.
nounThe metabolic process by which the body converts fatty acids into ketone bodies, which can be used for energy when carbohydrate availability is limited.
- The biochemical process of producing ketone bodies from fatty acids in the liver.
"Ketogenesis increases during prolonged fasting, allowing the body to obtain energy from stored fat."
"The study examined how ketogenesis changes when carbohydrate intake is restricted."
"Prolonged exercise may increase ketogenesis and alter the body's use of energy during recovery."
Ketogenesis lets the body turn stored fat into alternative fuel, helping it keep running when carbohydrates are scarce.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does ketogenesis come from?
The word combines ketone, derived from the Greek kētōn, meaning ketone, with the Greek-derived suffix -genesis, meaning production or formation. The terminology developed within the biochemical study of fat metabolism and ketone-body production. Its components are also reflected in related terms such as ketosis and ketogenic.
Related word forms
How ketogenesis is actually used
Primarily used in biochemistry, nutrition, and medicine. It is more technical than the everyday expression 'burning fat,' and it describes a metabolic process rather than the resulting condition of ketosis.