In animal testing the zirconium-treated animals (zirconium salts in drinking water) survived significantly longer than the non-treated control animals [1].


Rats exposed to 10 g/kg ZrO2 showed no negative symptoms. The animals have been treated over the whole lifetime with soluble metal salts in the drinking water. Zirconium did accumulate in several organs (e.g. spleen and heart), but this induced no negative effects especially on the overall lifetime which was prolonged in the zirconium-treated rats compared to the control animals.


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  1. Schroeder, HA et al. (1970), J Nutr, 100(1): 59-68.


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