The following link is to an essay written by Tammie Ferris who ran an HS hotline some years ago. She did tremendous research and has written a very easy to understand translation of serious research done by two doctors, Dr. Samuel Thatcher, and Dr. Michael Birnbaum. Please read it. http://forums.horsecity.com/index.php?showtopic=47064237 If you read my profile you'll see I've applied this research to myself and have been in remission for many years. Regards, Bernie