all I know is that I am suppose to be on Asthma medicene. I am not and don't know whether the Blood Type Diet cured it (according to the book, O's are very suseptable to asthma) or whether curezone cured it (liver flush, parasite cleanses and such) I just know it's refreshing to breath without coughing. I guess I could test the theory by going back to wheat and dairy, but I would prefer to breathe.