Fyer Keto Price : In fact, one of the major concerns regarding the diet is its long-term feasibility. Strict dieting regimens that lead to short-term weight loss can eventually lead to increased weight gain once dieters stop following the diet. The ketogenic diet premiered in the medical setting in 1921 by Dr. Russel Wilder. The diet was originally intended to treat children diagnosed with epilepsy. The anti-seizure effects were first noticed in response to fasting.