If you are not living under a rock, we are pretty sure you are aware of the high-fat, low-carb, keto diet.For the uninitiated, keto is short for ketogenic diet- a diet plan that prompts ketosis, a state in which the central nervous system runs on ketone bodies instead of glucose.This diet focuses on minimizing carbs and upping the fat levels in the body. This latest fad diet has hit the celebrity and the common man alike, with the likes of Kourtney Kardashian and Halle Berry swearing by this diet. But before you get inspired by the celebs and jump into the keto bandwagon, you need to know this strange backstory about this diet.The ketogenic diet was developed in the 1920s as a treatment for epilepsy. Yes, you read that correctly. According to the Department of Pediatrics and Neurology, University of Tennessee Health Science Center, this diet was introduced to mimic the metabolism of fasting.Since fasting and dietary regimens have been used to treat epilepsy since 500 BC, the sole aim of the diet was to trick the body into the fasting mode by following a meal plan that consists of 60-75 % fat, 15-30 % protein and 5-10 % carbs.This, in turn, forces the body to break fat into ketone, which is then used as a source of energy, in the absence of glucose.According to scientists, ketones have an anti-electrical effect on the brain and hence, for almost two decades this therapy was widely used to treat epilepsy. After the availability of antiepileptic drug treatment, usage of this regimen declined dramatically.This bizarre finding has brought in focus the fact that when it comes to your body, one must thoroughly research before adopting any lifestyle changes, especially while incorporating diet plans.