E171, a mixture of micro- and nano-sized particles of titanium dioxide (TiO2), is commonly used in high quantities in foods and some medicines as a whitening agent. Found in more than 900 food products such as chewing gum and mayonnaise, E171 is consumed in high proportion everyday by the general population. A new study, conducted in mice, provides evidence that TiO2 nanoparticles may have a substantial and harmful influence on human health. TiO2...
