Keto acids are organic compounds that play a crucial role in metabolism, particularly in the Krebs cycle. They are produced during the breakdown of fats and proteins, serving as an alternative energy source when carbohydrates are limited. Common keto acids include acetoacetate and beta-hydroxybutyrate, which are often associated with the ketogenic diet. In the body, keto acids can be converted into energy, especially during periods of fasting or low carbohydrate intake. They help maintain energy levels and support various bodily functions. Additionally, keto acids can influence the balance of pH in the body, contributing to overall metabolic health.