The basis of the ketogenic diet is that it causes your body to produce “Ketones” in your blood stream, which are then used as your body’s main source of energy, instead of blood sugar. In a standard diet, your body will convert carbohydrates to blood sugars, which are then used by cells as fuel. In a body that has reached “ketosis”, you begin to break down stored fats into ketone bodies which are then used as fuel in the absence of carbs and blood sugar.
The transition from standard energy use to Ketosis results from a low carb diet. Once a person has gone roughly 2 – 4 days with eating fewer than 50 grams of carbs (this amount will vary from person to person) they will begin to enter ketosis.
A usual Ketogenic diet is very high in protein and fats, to make up for the lack of carbs. Foods most often found in a Keto diet are meats, eggs, cheese, nuts & seeds, oils, heavy dairy, and mostly green vegetables. Due to the lack of bread and other carb heavy products, this diet can be a more expensive one, and is often hard to maintain over a long term.
For the average American, carbs account for over 50% of our diet. SO obviously moving to an extremely low carb diet is a far departure for most people, though it does have its benefits. Most people who undertake a Ketogenic diet, and actually reach the ketosis state, find themselves with a higher rate of fat loss. This can be attributed to the breakdown of stored fats to produce ketones, but could also be from simple calorie restriction.
Because of the richness of food in the Ketogenic diet, it is often recommended that people who suffer from kidney disease or other related ailments should exercise extreme caution, as it could worsen their condition.
Overall, the Ketogenic diet is a viable option for those who are looking to cut their body fat down, but always make sure to do your research first.