Titanium Dioxide – Uptake

In vitro studies of lung cells and in vivo studies of test animals have shown that certain doses of titanium dioxide (TiO2) particles may cause damage to the lung or lung cells.

Different studies carried out in the recent years have shown that titanium dioxide (TiO2) does not penetrate skin and enter the body [1,2,5,6]. Due to its many layers, the skin provides a good barrier to particles.

In Germany the addition of TiO2 nanoparticles in food or food packaging is not allowed. But small amounts of TiO2 can pass via an accidental ingestion of sunscreen in the gastro-intestinal tract.

The effects of titanium dioxide (TiO2) nanoparticles have been studied in many plants and animals. They are thus among the most extensively tested nanoparticles. Both in vivo and in vitro data are available. Experiments have been carried out in various media (water, soil) and with different routes of exposure (water, food, blood, soil).

 

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