We’re most often exposed to E171 through the foods we ingest. We find E171 in many food products, like popsicles, ice cream, gum, and more. Another way we ingest E171 is through pharmaceutical drugs. Many pills and capsules contain E171 as an inactive ingredient.  

The California plaintiff is apparently not the only one concerned about titanium dioxide. The European Union recently banned its use citing concerns about serious health consequences.