Hi cahmom,
I forgot to let you know that if your son is taking Diamox the diet will not work. He will have to take another AED (seizure med) if he's on Diamox. Also your son will have to fast for 2 days and then his body will slowly go on the diet because if he goes on it to fast it can make him sick with an upset stomach and running to the restroom. The diet is only good for 2 yrs. and then he will have to go off the diet. To get more info. on the diet you can buy the book by Dr. John Freeman called the Epilepsy Diet Treatment this explains how the ketogenic diet works and that Atkins Diet does the same thing except it's less strict, be sure to tell your son to watch his cholestoral level also and he should do a lot of exercises to burn off the extra fat.
Here's wishing you and your son only the best and May God Bless You Both!

Sue