The basis of Ketogenic Therapy is an altered macronutrient intake. It is based on a ratio of fat: protein+carbohydrate in which protein intake is adequate and carbohydrate is minimal. On Ketogenic Therapy, the body metabolizes fat, producing ketones as an energy source for the brain. Induction of ketosis has been shown to correlate with the reduction of seizures observed with Ketogenic Therapy. A major challenge of Ketogenic Therapy in children is that the compounds provided to stop seizure activity are the same compounds provided for growth and development. The altered macronutrient ratio that is the basis of Ketogenic Therapy is also a potential risk factor for dyslipidemia and may adversely affect growth. The investigators will evaluate efficacy of Ketogenic Therapy by assessing seizures and requirements for antiepileptic drugs. The investigators will evaluate adverse effects of Ketogenic Therapy by assessing dyslipidemia and growth. The investigators will foster optimal daily administration of therapy with structured training programs for caregivers.