The Ketogenic diet is considered to be one of the most effective treatments for epilepsy. Recent studies show that ketogenic diets are helpful for other neurological disorders including Parkinson’s and early-onset Alzheimer’s disease, autism, and traumatic brain injury. Ketogenic diets have been shown in animal studies and in anecdotal reports to thwart the growth of certain types of brain tumors and other aggressive cancers. New applications of the ketogenic diet for cancer, autism, ALS, Parkinson’s Disease, type-2 diabetes, and traumatic brain injury have emerged. Scientific data regarding these new uses of diet therapy is accumulating rapidly. Variations of the ketogenic diet for these other disorders are being developed.