Thirty-one per cent of patients who had idiopathic epilepsy were rendered free of attacks and 16 per cent became definitely improved when the ketogenic diet was given an adequate trial. In all, 47 per cent were benefited.Approximately 11 per cent of patients who had symptomatic epilepsy became free of attacks following the use of the ketogenic diet.Eight per cent of patients with idiopathic epilepsy, whose seizures were controlled by the ketogenic diet, had recurrence of attacks within seven years following the last attack. No recurrence occurred after more than seven years.Abstract Teaser