Scientists link BPA in plastics to heart disease

#mce_temp_url#With disagreement over baby bottle chemical (bisphenol A), what’s a parent to do?

Reuters Health in London is reporting that exposure to a chemical found in plastic containers is linked to heart disease. Scientists researching bisphenol A, known as BPA, have just confirmed earlier findings casting suspicion on BPA and adding to pressure to ban its use in bottles and food packaging — not only for those containers of food or drink for infants and children, but also adults.

British and U.S. researchers studied the effects of the chemical bisphenol A using data from a U.S. government national nutrition survey in 2006 and found that high levels of it in urine samples were associated with heart disease.

Bisphenol A, known as BPA, is widely used in plastics and has been a growing concern for scientists in countries such as Britain, Canada and the United States, where food and drug regulators are examining its safety.

David Melzer, professor of epidemiology and public health at the Peninsula Medical School in Exeter, England, who led the study, said the research confirmed earlier findings of a link between BPA and heart problems.

The analysis also confirmed that BPA plays a role in diabetes and some forms of liver disease, said Melzer’s team, who studied data on 1,493 people aged 18 to 74.

“Our latest analysis largely confirms the first analysis, and excludes the possibility that the original report was a statistical blip,” they said in a statement.

BPA, used to stiffen plastic bottles and line cans, belongs to a class of compounds sometimes called endocrine disruptors.

The U.S. Endocrine Society called last June for better studies into BPA and presented research showing the chemical can affect the hearts of women and permanently damage the DNA of mice.

“The risks associated with exposure to BPA may be small, but they are relevant to very large numbers of people. This information is important since it provides a great opportunity for intervention to reduce the risks,” said Exeter’s Tamara Galloway, who worked on the study published by the Public Library of Science online science journal PLoS One.

U.S. environmental health advocacy groups are urging a federal ban on BPA.

“There’s enough research to take definitive action on this chemical to reduce exposures in people and the environment,” Dr. Anila Jacob of the Environmental Working Group, a non-profit organization, said in a telephone interview.

The U.S. Food and Drug Administration is considering whether any action needs to be taken. And I would expect them to express a more cautionary tone in the future. There’s just too much evidence now to not do so.

U.S. government toxicologists at the National Institutes of Health concluded in 2008 that BPA presents concern for harmful effects on development of the prostate and brain and for behavioral changes in fetuses, infants and children.

Canada’s government plans to outlaw plastic baby bottles made with BPA. The charity Breast Cancer UK last month urged the British government to do the same because they said there was “compelling” evidence linking the chemical to breast cancer risk.

Experts estimate BPA is detectable in the bodies of more than 90 percent of U.S. and European populations. It is one of the world’s highest production volume chemicals, with more than 2.2 million tonnes produced annually.

My advice to my patients is to avoid, as much as possible, containers with BPA — and certainly not to heat or microwave items in BPA containers. Also, for parents I advise that they not feed their children using plastics containing BPA.

For now, I think it’s better to be safe than sorry.

Here are a couple of my past blogs on BPA:

Enter your email to subscribe to Dr. Walt's blogs.

You have successfully subscribed to the newsletter

There was an error while trying to send your request. Please try again.

Dr. Walt Larimore will use the information you provide on this form to be in touch with you and to provide updates and marketing.