The original ketogenic diet is a high-fat, low-carbohydrate diet developed in the 1920s and used to treat drug-resistant childhood epilepsy. The fad diet that adopted the same name is also a high-fat, low-carb diet, but proclaims to induce weight loss. The premise of the weight-loss ketogenic diet is that if the body is deprived of glucose obtained from carbohydrate foods, it will produce energy from stored fat. A typical version of this keto diet for adults has about 50% of food by weight coming from fat (70% of calories).
A 2020 revi