Study: BPA research might have been bias

April 17, 2007

A U.S. scientific journal says bias might have resulted in inconsistent study results concerning the danger of a chemical found in many products.

Bisphenol A, or BPA, is a weak synthetic estrogen used in a variety of consumer products including baby bottles and food and beverage containers. Some animal studies have linked BPA with such adverse health effects as obesity and cancer and there's concern it might cause similar adverse effects in humans.

Among government and industry experiments on lab animals and tissues, 153 found adverse effects and 14 did not. The majority of those reporting no harm were funded by chemical corporations, the journal Chemical & Engineering News reported.

Now an editorial in the journal's April 16 issue by Senior Editor Bette Hileman highlights a number of potential sources of bias behind the inconsistent study outcomes, including the use of strains of rats that are insensitive to estrogen and choosing batches of animal feed that vary widely in their estrogenic activities.

The American Chemical Society journal said only an unbiased panel with appropriate expertise can resolve the apparently conflicting results of the BPA-related health studies.

Copyright 2007 by United Press International

Explore further: Collaboration discovers toxic chemical in birds outside of Superfund site

Related Stories

Spider and centipede venom evolved from insulin-like hormone

June 11, 2015

Funnel-web spider venom contains powerful neurotoxins that instantly paralyze prey (usually insects). Millions of years ago, however, this potent poison was just a hormone that helped ancestors of these spiders regulate sugar ...

Recommended for you

Just how good (or bad) is the fossil record of dinosaurs?

August 28, 2015

Everyone is excited by discoveries of new dinosaurs – or indeed any new fossil species. But a key question for palaeontologists is 'just how good is the fossil record?' Do we know fifty per cent of the species of dinosaurs ...

Fractals patterns in a drummer's music

August 28, 2015

Fractal patterns are profoundly human – at least in music. This is one of the findings of a team headed by researchers from the Max Planck Institute for Dynamics and Self-Organization in Göttingen and Harvard University ...

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.