I use a ketogenic diet as part of my seizure management. I started out at 8g of carbs per day and (over the past 2 1/2 years) have worked up to 30g of carbs per day. I don't practice calorie restriction and just make sure I keep my ratios correct (currently 1:3:5 of carbsrotein:fat). I started the diet out of desperation while I was waiting to get in with an epileptologist with the full knowledge that I could accidentally cause myself major physical problems. I didn't, but be smart and know your risks. I did find it very difficult to keep on body fat when I was under 20g/day and that's one reason I took the chance on upping my carb intake. At 30g/day and sedentary (I am changing that!), I can keep on body fat rather easily now. The diet works beautifully for my seizures and accounts for about the same amount of seizure control as my anticonvulsant. Even if my seizures vanished today though - even though the diet is so restrictive, I have a ton more energy than I did before and I would continue it. My body just runs better on fat.