The keto diet is one of a series of fashionable low-carb diets that include the Atkins diet, the South Beach diet and the Zone diet. There are hundreds of people selling keto diet plans online and on social media, with big promises of results. The diet got its name because ketones are the source of energy that the body uses when it’s burning fat. Ketones are produced in weight loss regardless of the type of diet you follow. Anyone losing weight is on a keto diet.
The production of ketones doesn’t necessarily mean you are burning body fat. So when keto dieters add fat to their diet through bulletproof coffee or coconut oil, it is burnt as fuel instead of body fat - which defeats the object of the diet, achieving weight loss.
By adding additional fat to the diet, your energy balance will remain positive regardless of the fuel (carbs, fat or protein) and this will promote weight gain, as is demonstrated by children on ketogenic diets when they gain weight despite the fact their urine shows that they are producing ketones.
Inducing ketosis - a natural state for the body, when it is almost completely fuelled by fat - in therapeutic diets is a skill that needs close supervision. This is because the diet is not balanced and can easily lead to nutrient deficiencies, nausea, vomiting, headache, tiredness, dizziness, insomnia, poor exercise tolerance and constipation - sometimes referred to as keto flu.