06 October 2009 21:52 [Source: ICIS news]
HOUSTON (ICIS news)--The American Chemistry Council (ACC) on Tuesday dismissed the results of a new study linking bisphenol A (BPA) exposure and more aggressive behaviours in young girls, saying the study was not meaningful unless replicated in a larger setting with more variables.
The study - conducted for the US Department of Health and Human Services - found that two-year-old girls whose mothers were exposed to higher levels of BPA while were more likely to have “externalising” behaviours, such as aggression and hyperactivity.
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Researchers did not find an overall correlation between BPA and externalising behaviours, but when split by sex, found a relationship between females and such patterns, the study said.
But according to the ACC, inherent in the design of such a small-scale study was the inability to establish a cause-effect relationship.
“The study can only evaluate parameters measured in the study for statistical associations, which may be neither real nor meaningful,” said Steven Hentges, executive director of the ACC’s polycarbonate (PC)/BPA global group.
The ACC noted that study authors said it is “difficult to accurately characterise exposure from a single measurement”, adding that statistical associations based on inaccurate exposure measurements cannot be meaningful.
In addition, the ACC cited variable behaviour patterns during early childhood, parental psychopathalogy and diet and nutrition details as potential influencers that were not included among the study’s variables.
“In light of its limitations, there is significant potential for this study to be misconstrued,” Hentges said. “The results of this preliminary, and severely limited, study cannot be considered meaningful for human health unless the findings are replicated in a more robust study.”
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