The term keto diet refers to a special diet that contains little or no carbohydrates. The diet is based on increasing fat intake while reducing the intake of carbohydrates. The diet, when followed, puts the body in ketosis. Ketosis is a metabolic state in which the body releases fatty acids into the liver, where it is then converted into ketones. These ketones serve as a fuel source for the body in the absence of glucose; a carb-based fuel source. Keto diet is known by many other names such as ketogenic diet, Low carb high fat diet, low carb diet and more.
The major purpose of the keto diet is to eliminate carbs from food intake without reducing food calories. Since carbohydrates are broken down into glucose; the easiest nutrient the body can convert into energy; the presence of glucose makes the body store up fat. This can lead to weight gain, and that has many other implications.