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Posted Thu Mar 5 2009: from Charleston Gazette:
C8 might damage sperm, study says
CHARLESTON, W.Va. -- Men with higher levels of C8 and similar chemicals in their blood have lower sperm counts and fewer normal sperm, according to a new scientific study published this week. The study, published in the journal Environmental Health Perspectives, is believed to be the first to link exposure to perfluorinated chemicals, or PFCs, to problems with human semen quality. Authors of the study say the findings might "contribute to the otherwise unexplained low semen quality often seen in young men," but added that more research is needed. The study also adds to the growing body of science about the potential dangers of exposure to C8, which also is known as perfluorooctanoic acid, or PFOA. In January, another study found that women with higher levels of these chemicals in their blood took longer to become pregnant than women with lower levels. Scientists in Demark produced the study, based on blood and semen samples from more than 100 men examined in 2003. The data was collected as part of a program through which such samples are provided when men report for Denmark's military draft. They found that men with high combined levels of PFOA and a related chemical, PFOS, had a median of 6.2 million normal sperm in their ejaculate, compared to 15.5 million normal sperm among men with lower levels of the chemicals.
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