Nicola,
The elimination of oxalates tends to help alot. The treatment of candida, mold and clostridia, if they are occuring, ultimtely helps too. I think the reduction in some of these foods helps symptomatically, but long-term avoidance of plant based salicylates and natural phenols is not practical. The difficulty is many of these foods are healthy for other reasons too, e.g. antioxidants. Our approach has always been trying to determine what is putting a strain on the metabolic system that processes oxalates so that long-term an individual is not overly sensitive to their consumption.
Dr. Woeller