Acetoacetate

Acetoacetate is a type of molecule called a ketone body produced by the liver during periods of fasting, prolonged exercise, or low carbohydrate intake. It serves as an alternative energy source when glucose, the primary fuel, is scarce. Once produced, acetoacetate can be converted into other ketones like beta-hydroxybutyrate, which supply energy to organs such as the brain and muscles. It plays a vital role in maintaining energy balance under certain metabolic conditions, especially when carbohydrate availability is limited.