Ketone bodies are molecules formed in the body as a result of fat breakdown.
When the carbohydrate intake in the diet decreases (as in the case of a ketogenic diet), the body begins to use fats as the primary source of energy. Fats are broken down into acids and then converted into ketones in the liver.
Ketones can be used by the brain, heart, and muscles as energy. This process is called ketosis.
The ketogenic diet aims to achieve a state of ketosis to stimulate weight loss and improve overall health.