The euphoria around the ketogenic diet is not new. The diet has been around for almost a century now. In spite of having such a long history, the diet is still going strong. Compared to the fad diets that come and go in a blink, ketogenic diets have had quite an interesting journey. They are still making headlines when a famous celebrity owes the secret behind their drastic weight loss to ketogenic diets? What are the reasons that make ketogenic diets so successful and sustainable over time?