even though you can eat it without risk, nanoparticles can be aerosolized, and cause injury to the lung that is unique to that route of administration. think o

even though you can eat it without risk, nanoparticles can be aerosolized, and cause injury to the lung that is unique to that route of administration. think of how different it is if you ingest vs. topically apply alcohol. This is the same issue: you can't necessarily extrapolate toxicity with one route to toxicity with another.