You can almost never say that something is not dangerous, unless it's practically mathematically proven...
This applies especially for food etc.
I think we have to be much more conservative with food and substances we put into it. A lot of (Meta-)meta-studies suggest, that processed food is a health risk.
And this may sound a little bit far-fetched, but I think a good amount of the idiocracy in (especially) the USA may be related to the food (as also a lot of studies have found connections to brain/psychological health).