see digestive systemdigestive system, in the animal kingdom, a group of organs functioning in digestion and assimilation of food and elimination of wastes. Virtually all animals have a digestive system. In the vertebrates (phylum Chordata, subphylum Vertebrata) the digestive system is very complex.
For information on ketogenic diets as a lifestyle choice or for weight loss, see Low-carbohydrate diet and No-carbohydrate diet. The ketogenic diet is a high-fat, adequate-protein, low-carbohydrate diet that in medicine is used primarily to treat difficult-to-control (refractory) epilepsy in children. The diet forces the body to burn fats rather than carbohydrates.
The following are more general guidelines for ketogenic diets. Carbohydrate - Most of what determines how ketogenic a diet is how much carbohydrate is eaten, as well the individual's own metabolism and activity level. A diet of less than 50 or 60 grams of net (effective) carbohydrate per day is generally ketogenic.