nanotech is no fucking joke. A relative of mine is one of the premier nano tech experts in the country and possibly the world. I can't follow half of what comes out of his mouth but the general picture is that this shit is not to be fucked with. There's huge upsides to this technology....but as usual people move with shit before it's been thoroughly vetted. So count on some greedy businessmen to do shit, like this food business for example, before they really know what the fucking consequences are. THe general public should be as insulated as earthly possible from these particles for decades to come, if not a century or more. No product that has the chance of exposing people internally to these particles should make it's way to market before they have absolute concrete evidence that their ability to pass cellular membranes is benign. Some of these particles will have benign effects on human physiology....but some could be catastrophic.
Basically I don't trust humans in the slightest with this sort of technology so it should be visciously controlled. Won't happen here cause the govt. is owned by business, so what they say goes.