E171 is Titanium dioxide. You need to be a chemist to find that in the ingredients list and think "yeah, that's going to be a fine meal"
Just because something sounds chemical-y doesn't mean it's bad for you, It just means that we know rather exactly what it is. Just about any ingredient has a chemical formula associated with it.
... in mice
As it always is, but it’s a good start. Maybe we they can get funding for human studies.