Task: Question Answering
Input (English): passage: A no-carbohydrate diet (no-carb diet, zero carb diet) excludes dietary consumption of all carbohydrates (including dietary fiber) and suggests fat as the main source of energy with sufficient protein. A no-carbohydrate diet may be ketogenic, which means it causes the body to go into a state of ketosis, converting dietary fat and body fat into ketone bodies which are used to fuel parts of the body that do not oxidize fat for energy, especially the brain. Some bodily organs and parts of the brain still require glucose, which is tightly regulated by the liver and adequately supplied by gluconeogenesis or by converting glycerol from the breakdown of triglycerides. A no-carbohydrate diet may use mainly animal source foods and may include a high saturated fat intake, though this is not prescriptive of the diet, which, by definition, only restricts carbohydrate intake.
 question: is there such thing as a no carb diet?
Output (English): Yes