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Environmental Chemicals Found In Breast Milk And High Incidence Of Testicular Cancer

Date:
September 25, 2009
Source:
Wiley-Blackwell
Summary:
A comparison of breast milk samples from Denmark and Finland revealed a significant difference in environmental chemicals which have previously been implicated in testicular cancer or in adversely affecting development of the fetal testis in humans and animals.

A comparison of breast milk samples from Denmark and Finland revealed a significant difference in environmental chemicals which have previously been implicated in testicular cancer or in adversely affecting development of the fetal testis in humans and animals.

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This finding is published in the International Journal of Andrology.

In recent years a worldwide increase in testicular cancer has been noticed, but the cause remains unknown. In some countries, such as Denmark the prevalence of this disease and other male reproductive disorders, including poor semen quality and congenital genital abnormalities is conspicuously high; while in Finland, a similarly industrialized Nordic country, the incidences of these disorders are markedly lower. In the UK, almost 2,000 men are diagnosed with testicular cancer every year, and in the US this number is over 8,000. There is a wide variation in incidence rates of testicular cancer around the globe, and the reasons behind the observed trends are unexplained.

Environmental endocrine disrupting chemicals (EDCs) are commonly found in fatty foods, paints, plasticizers, pesticides, and the byproducts of industrial processes, and in recent studies an association has been shown between some of these agents and male reproductive problems. To investigate whether EDCs could be related to such great differences in reproductive disorders between closely related countries, Konrad Krysiak-Baltyn and colleagues from Denmark, Finland, and Germany measured levels of 121 chemicals in 68 breast milk samples from Denmark and Finland to compare exposure of mothers to EDCs.

With so many chemicals, they used sophisticated, bioinformatics tools to interpret the complex data, and the results showed a clear distinction between the countries.

"We were very surprised to find that some EDC levels, including some dioxins, PCBs and some pesticides, were significantly higher in Denmark than in Finland," said Professor Niels Skakkebaek, a senior member of the research team, based at the University Department of Growth and Reproduction, Rigshospitalet, Denmark. "Our findings reinforce the view that environmental exposure to EDCs may explain some of the temporal and between-country differences in incidence of male reproductive disorders."

"In spite of the findings, I would strongly urge women, including Danish mothers, to continue with breast feeding, which has many beneficial effects for the child," added Skakkebaek.


Story Source:

The above story is based on materials provided by Wiley-Blackwell. Note: Materials may be edited for content and length.


Journal Reference:

  1. Krysiak-Baltyn et al. Country-specific chemical signatures of persistent environmental compounds in breast milk. International Journal of Andrology, 2009; DOI: 10.1111/j.1365-2605.2009.00996.x

Cite This Page:

Wiley-Blackwell. "Environmental Chemicals Found In Breast Milk And High Incidence Of Testicular Cancer." ScienceDaily. ScienceDaily, 25 September 2009. <www.sciencedaily.com/releases/2009/09/090924153638.htm>.
Wiley-Blackwell. (2009, September 25). Environmental Chemicals Found In Breast Milk And High Incidence Of Testicular Cancer. ScienceDaily. Retrieved December 20, 2014 from www.sciencedaily.com/releases/2009/09/090924153638.htm
Wiley-Blackwell. "Environmental Chemicals Found In Breast Milk And High Incidence Of Testicular Cancer." ScienceDaily. www.sciencedaily.com/releases/2009/09/090924153638.htm (accessed December 20, 2014).

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