well...not really, I mean, unless it's an allerg I developed within the past 2 years. The digestive specialist I've been working with for a while seems to think I hvae a grain intolerance of some sort, so it could have been the nan - not sure. As a side note, my ear also clogges up to something. I read this is a common problem wtih candida / bacteria / parasitic infestations as well. Who knows...