Winnipeg Free Press - PRINT EDITION

'BPA-free' bottles leach chemical: study

  • Print

OTTAWA -- Health Canada scientists have found bisphenol A leaching into liquid in plastic baby bottles marketed to parents as being free of the toxic chemical.

The study says "traces" of the toxin were found in "BPA-free" bottles while internal correspondence between a department official and the lead scientist went further, characterizing the amounts in two brands as "high readings."

Manufacturers of non-polycarbonate plastic baby bottles, however, were quick to challenge the "shocking" results, saying there must be a problem with the way the agency conducted the research.

Government scientists conducted the tests on non-polycarbonate bottles last year after Health Canada announced an imminent ban on polycarbonate plastic baby bottles.

By then, the market had already been flooded with "BPA-free" alternatives made of substitute plastics without any bisphenol A, which were pitched as an option for parents concerned about health risks.

Bisphenol A, a hormone disrupter that can cause reproductive damage and may lead to prostate and breast cancer in adulthood, is used as a building block in polycarbonate plastic, but not in the substitutes, such as polypropylene.

The test results surprised Health Canada scientists, according to records released to Canwest News Service under the Access to Information Act.

"This bottle is labelled polypropylene which should contain no BPA," the lead scientist wrote to a colleague, recommending another analysis be done to "verify the claim."

The brand mentioned in the correspondence is blacked out on the grounds that the information could result in financial loss or prejudice the competitive advantage of a company.

The records show Health Canada tested about nine different brands of baby bottles using non-polycarbonate plastic for possible leaching of BPA, chosen because they're made with a type of plastic that does not use the chemical as a building block.

In a recently published summary of the test results, researchers suggest the "traces of BPA found to migrate from these bottles could be artifacts of the manufacturing process."

And since these "BPA-free" bottles leached less than polycarbonate plastic bottles under conditions designed to simulate repeated normal use, the government researchers concluded these bottles made of polysulfone, polystyrene or polypropylene (non-PC) are a "reasonable alternative" to the banned polycarbonate (PC) bottles.

University of Missouri's Frederick vom Saal, a leading researcher into bisphenol A and other endocrine disrupters, said even if trace amounts can be explained away as a result of environmental contamination, companies need to revisit their manufacturing processes.

 

-- Canwest News Service

 

 

Republished from the Winnipeg Free Press print edition July 30, 2009 A9

Fact Check

Fact Check

Have you found an error, or know of something we’ve missed in one of our stories?
Please use the form below and let us know.

* Required
  • Please post the headline of the story or the title of the video with the error.

  • Please post exactly what was wrong with the story.

  • Please indicate your source for the correct information.

  • Yes

    No

  • This will only be used to contact you if we have a question about your submission, it will not be used to identify you or be published.

  • Cancel

Having problems with the form?

Contact Us Directly
  • Print

You can comment on most stories on winnipegfreepress.com. You can also agree or disagree with other comments. All you need to do is be a Winnipeg Free Press print or e-edition subscriber to join the conversation and give your feedback.

You can comment on most stories on winnipegfreepress.com. You can also agree or disagree with other comments. All you need to do is be a Winnipeg Free Press print or e-edition subscriber to join the conversation and give your feedback.

Have Your Say

New to commenting? Check out our Frequently Asked Questions.

Have Your Say

Comments are open to Winnipeg Free Press print or e-edition subscribers only. why?

Have Your Say

Comments are open to Winnipeg Free Press Subscribers only. why?

The Winnipeg Free Press does not necessarily endorse any of the views posted. By submitting your comment, you agree to our Terms and Conditions. These terms were revised effective April 16, 2010.

letters

Make text: Larger | Smaller

LATEST VIDEO

Your top TV picks for this weekend - Aug 29 - Sept 1

View more like this

Photo Store Gallery

  • A Canada Goose cools off in a water pond Monday afternoon at Brookside Cemetary- See Bryksa’s Goose a day Challenge– Day 27-June 25, 2012   (JOE BRYKSA / WINNIPEG FREE PRESS)
  • June 24, 2012 - 120624  -  Amusement riders on the last day of The Ex Sunday June 24, 2012.    John Woods / Winnipeg Free Press

View More Gallery Photos

Poll

Should panhandling at intersections be banned?

View Results

View Related Story

Ads by Google