What Is The Ketogenic Diet?
The ketogenic diet is a diet low in carbohydrates and high in lipids, which deviates from human consumption habits and recommendations for the general population.
Since 2006, Nutrition has recommended the following percentages of caloric intake: 40 to 55% for carbohydrates, 30 to 40% for fats (lipids), and 15 to 29% for proteins.
For their part, after having long advised a diet very rich in carbohydrates (50 to 55%), and low in fat (30 to 35%) French health authorities have recently made recommendations that are similar to those of MalNutrition, 40 55% of the calories in the form of carbohydrates, 35 to 40% in the form of lipids and 10 to 20% in the form of proteins.
But in the ketogenic diet (Keto ultra diet review), it is about 70 to 80% of lipids, 20 to 25% of proteins and 5 to 10% of carbohydrates (20 to 50 grams of carbohydrates per day).
This mode of diet restricts carbohydrates to force the body to use lipids as a source of energy, to make ketone bodies (acetoacetate, beta-hydroxybutyrate) and thus to achieve ketosis (when the body uses mainly ketonic bodies as source energy). Ketosis has therapeutic effects : besides epilepsy, it could be useful against diabetes ; it is also used to treat certain cancers and neurodegenerative diseases (Parkinson, Alzheimer). The mechanisms of action are not yet clear.
For the little story
At the time of ancient Rome, it was considered that epileptics were inhabited by the demon. They were locked in a room for a few days without food, and the patients were improved. Through the siceles, fasting has become a method of treating epilepsy, with its disadvantages: we can not starve a patient to cure him permanently.
In 1921 the American doctor Russell Wilder sought to reduce or even eliminate seizures in children with epilepsy without fasting. He found that a very fat diet leads to the production of ketone bodies as in fasting. And the diet has been successfully used in this indication until the development of drugs against epilepsy in the late 1940s.
The ketogenic diet regained interest in the 1990s, especially to treat children who remained refractory to epilepsy drugs. Today the applications of this diet are more numerous and the studies are multiplying.
What does the research say?
The ketogenic diet is a strict version of the Atkins diet (low carb). The latter losing weight, it is natural to think that the ketogenic diet (Keto ultra diet review), despite its fat intake, is also effective to slim down.
Many studies have been done with obese or overweight people. In one study, researchers reported a loss of 7 kg in 4 weeks and then 5 kg 8 weeks later. They followed the diet for one year and decreased their body mass index by about 5 percentage points.
How it works ?
To explain that a high fat diet do lose weight? In fact, we do not know very well and several hypotheses have been put forward:
- Decreased appetite due to diet-induced changes in satiety hormones or direct effects of ketones
- Increased energy expenditure to continue to produce glucose from proteins via a metabolic process called gluconeogenesis
- Reduction of insulin and thus storage of energy in the form of body fat, and on the contrary use of body fat.