Final answer:
A ketogenic diet is a high-fat, low-carbohydrate diet that forces the body to burn fat instead of sugar. It prevents the body from producing too many ketones and is used when glucose levels are low, such as during fasting or low carbohydrate diets.
Step-by-step explanation:
A ketogenic diet is a high-fat, low-carbohydrate diet that forces the body to burn fat instead of sugar to produce energy. This is achieved by preventing the body from producing too many ketones. Ketones are produced when excess acetyl CoA is created from the oxidation of fatty acids and the Krebs cycle is overloaded and cannot handle it. The ketone bodies serve as a fuel source when glucose levels are low in the body, such as during prolonged fasting, low carbohydrate diets, or uncontrolled diabetes.