Ketosis is a metabolic state in which most of the body’s energy supply comes from ketones (sometimes known as “fractured fats”) found in blood plasma. This is very different to the state of glycolysis in which plasma glucose (carbohydrates) provides most of the body’s energy needs.
Despite rumblings around the internet, ketosis is absolutely a natural state for the body to be in, when it is almost completely fueled by ketones. Without a doubt, ketosis is a normal metabolic state during fasting or when a person is on a very strict low-carbohydrate diet, which is known also as a “ketogenic diet.”
The nuts and bolts of a ketogenic diet was actively designed in 1924 by Dr. Russell Wilder at the Mayo Clinic as a potential cure for epilepsy. The general idea behind a ketogenic diet is that the dieter will obtain most of his or her daily calories from fat, less from protein, and even less from carbohydrates. When a person consumes fewer than 50 grams of carbohydrates per day, the human body will eventually run out of fuel (plasma glucose) that it can use immediately.