Rotten eggs courtesy of BPA


Now we have the first evidence that bisphenol A (BPA) may reduce the quality of a woman's eggs when retrieved for IVF. Researchers found that as blood levels of BPA in the women doubled, the percentage of eggs that fertilized normally in the lab declined by 50% according to a study published in Fertility and Sterility.

"While preliminary, the data indicate the negative effect of BPA on reproductive health and the importance of allocating more funding to further investigate why such environmental contaminants might be disrupting fertility potential," said Victor Y. Fujimoto, MD, lead author of the study and professor in the UCSF Department of Obstetrics.

BPA is used to make plastic hard and clear. It is found in common cleaner holders and the linings of cans and food containers. Other studies have linked BPA to reduced male fertility and to compromising fertility in unborn girl babies.

"Given the widespread nature of BPA exposure in the US, even a modest effect on reproduction is of substantial concern," said Michael S. Bloom, PhD, senior author and an assistant professor int he departments of Environmental Health Sciences and Epidemiology and Biostatistics at the School of Public Health of the University of Albany. The Centers for Disease Control found BPA in the urine of almost everyone tested in a 2004 analysis of the US population. Prevalent doesn't begin to describe the nature of BPA.

"Unfortunately at this time there is no clinically available test to determine BPA levels in women," Fujimoto said. "Despite the limited evidence, a cautious approach for women who are considering IVF treatment would be to reduce their exposure to BPA through modifications in lifestyle and diet."


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