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A keto- diet refers to a ketogenic diet, which is a high-fat; adequate-protein; low-carbohydrate content with the goal is to get more calories from protein and fat than from carbohydrates. It works by depleting the body of its store of sugar, so it will start to break down protein and fat for energy, causing ketosis. There has been a remarkable resurrection of attention in the ketogenic diet in the last few years. However, the ketogenic diet (KD) is not a very new treatment option. It was first reported in the year 1921 when Geyelin made the first scientific annotations about the association of fasting and seizures when he noticed that some of his patients were seizures free during fasting. Wilder suggested that that ketonemia has a sedative effect on the brain, mimicking anesthesia if the body is deprived of glucose and is forced to metabolize fats that produce ketones. The use of ketogenic diets in weight management has gained marvelous fame in the last couple of years, but at the same time, it has also created several controversies. Some researchers advocate that keto-diet has no metabolic advantages and the weight loss during the process results simply from reduced caloric intake, probably due to the increased satiety effect of protein on the brain.  There are several other adverse effects of ketogenic diet also, which include muscle cramps, bad breath, changes in bowel habits, keto-flu and loss of energy. It is noticeable that the ketogenic diet is proving to be an effective treatment but it is not entirely benevolent and benign. It must be prescribed thoughtfully, implemented carefully, and monitored closely. It is also notable that we need to learn new information about the mechanisms of action, effectiveness, indications, and most importantly the side effects of the Ketogenic Diet.

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