I have joined the Low Oxalate Diet (LOD) forum run by Susan Owens a researcher and wondering it it might play some role in CFS. Have not started the diet, still reading and mulling the information on the site. I cant seem to find a list of symptoms that would cause me to suspect oxalates as a major piece of my illness puzzle. One surprising thing I learned is that Vit C should not be taken in high doses, not talking mega doses just what would be considered normal high dose......it seems its best not to take it at all but to get it through food so levels dont get too high. I think it increases your oxalate level.