I just thought I would share an alarming fact with you. A few weeks ago, there was a documentary on a major UK television station about the dangers of cooking food at very high temperatures. Things like french fries have been found to be carcinogenic & the government are considering bringing in legislation to ensure that fast food places do not have the frying oil over a certain temperature. I had already heard about this some years back, so I was not surprised.
The other thing came more as a shock to me: Ryvita contians high levels of carcinogens too!!!!!!!
In Germany, the authorites want a countrywide ban of the sale of Ryvita, which is very drastic.
I have not found (or even looked for) any other research to back this up but I have stopped eating them, even though I love them so much.
My conscience wouldn't let me sit on this information when I read your posting.