https://www.google.com/search?q=epilepsy+cured+by+ketogenic+diet&source=hp&ei=WR4MYbrPF9HB7gLxhb2gAw&iflsig=AINFCbYAAAAAYQwsaRreUxjy7XKKcpDFwewkyGpTraUb&oq=epilepsy+cured+by+keto&gs_lcp=Cgdnd3Mtd2l6EAEYATIICCEQFhAdEB4yCAghEBYQHRAeMggIIRAWEB0QHjoICAAQgAQQsQM6BQgAEIAEOgsIABCABBCxAxCDAToOCC4QgAQQsQMQxwEQowI6CwguEIAEELEDEIMBOggIABCABBDJAzoHCAAQgAQQCjoGCAAQFhAeOggIABAWEAoQHlDiF1jKZmCAe2gDcAB4AIAB3wGIAYkRkgEGMS4xNS4ymAEAoAECoAEB&sclient=gws-wiz

The above is a link to a GOOGLE search using the terms "epilepsy cured by ketogenic diet"

There are multiple sites saying it works.  Thought it was interesting and if you go back to the first posting and read through the comments there's one there extolling the benefits of a KETO diet for several illness's.