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Exposure of humans to cosmetic UV filters is widespread
Date:11/2/2010

Amsterdam, 2 November, 2010 - An investigation conducted in the context of the Swiss National Research Programme (NRP50), Endocrine Disrupters: Relevance to Humans, Animals and Ecosystems, demonstrates for the first time that internal exposure of humans to cosmetic UV filters is widespread.

In the course of the Summer and Fall 2004, 2005 and 2006 (3 cohorts), human milk was sampled by mothers who had given birth at the University Women's Hospital in Basel. The participants filled out a detailed questionnaire with general questions and, as special feature, in depth questions on use of different types of cosmetic products.

Chemicals out of a large range of products including "modern" chemicals and classical persistent organic pollutants (POPs) were analyzed in the same human milk sample by analytical laboratories in Freiburg, Erlangen and Baden. The list comprised cosmetic UV filters, synthetic musk fragrances, pesticides, phthalates, parabens, flame retardants (polybrominated diphenylethers), and polychlorinated biphenyls (PCBs); in total 89 analyses per milk sample. The chemical analytical data of milk samples of individual mothers were then compared with the information obtained through the questionnaire.

The investigation revealed that one and the same human milk sample contained a large range of chemical contaminants, most of which are known to interact with endocrine systems. Individual exposure patterns differed between different types of chemicals. The study demonstrates for the first time that internal exposure of humans to cosmetic UV filters is widespread. Cosmetic UV filters were present in 85% of human milk samples, at concentrations comparable to PCBs. Synthetic musk fragrances were also present in the milk samples. The presence of UV filters in human milk was significantly correlated with the use of cosmetic products containing these UV filters. As a result, exposure patterns differed between individuals.

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Contact: Carolien Van Der Zanden
C.Zanden@elsevier.com
31-204-853-346
Elsevier
Source:Eurekalert

Page: 1 2 3

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