A ketogenic diet is a very high fat diet that relies on inducing a state of ketosis. The diet typically provides 3-4 grams of fat for every 1 gram of carbohydrate and protein combined. It is most commonly used for the treatment of epilepsy. A likely ketogenic diet is comprised of 88% fat, 10% protein, and 2% carbohydrate energy.

The diet prescribes foods high in fat, and heavily restricts carbohydrate intake. As fats become the body's primary source of metabolic energy, ketones accumulate in the brain, which can alleviate epileptic symptoms.

Foods used in the diet include high-triglyceride dairy products (e.g., butter, cream), mayonnaise and peanut butter. Carbohydrates, found in breads and starches, are eliminated in the diet, and liquid and calorie intake are often restricted as well in order to aid ketone accumulation. This has been used as well for some patients with epilepsy, as well as a low-glycemic index diet.

The diet is typically supplemented with calcium, vitamin D, iron, and folic acid.

The ketogenic diet has been reported to work in cases where multiple epilepsy drugs have failed. There may also be cases where the ketogenic diet has failed and epilepsy drugs succeeded. When one epilepsy drug fails, there is a high likelihood that other drugs will also fail. When the diet works, the response is often rapid and dramatic. 

Nutritional Information per 100g