Animal studies have shown that, when consumed as a food additive, titanium dioxide can induce intestinal inflammation.
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Moreover, TiO2's photocatalytic properties can break down organic pollutants under sunlight, making it environmentally friendly and contributing to cleaner air Moreover, TiO2's photocatalytic properties can break down organic pollutants under sunlight, making it environmentally friendly and contributing to cleaner airtitanium dioxide in coatings factory.In its 2016 opinion, the ANS Panel recommended new studies be carried out to fill the gaps on possible effects on the reproductive system, which could enable them to set an Acceptable Daily Intake (ADI ). Uncertainty around the characterisation of the material used as the food additive (E 171) was also highlighted, in particular with respect to particle size and particle size distribution of titanium dioxide used as E 171.