Dogs Have 3X More BPA After Eating Canned Food

Dogs Have 3X More BPA After Eating Canned Food

Researchers saw a three-fold increase in BPA levels in dogs who ate canned dog food for two weeks. They also saw changes in the dogs’ gut microbes.

Bisphenol A (BPA) is a widely used industrial chemical found in many household items, including resins used to line metal storage containers, such as food cans. The chemical can disrupt hormones and is linked to a range of health problems.

“Our canine companions may be the best bio-sentinels for human health concerns.”

“Bisphenol A is a prevalent endocrine-disrupting chemical found in canned foods and beverages,” says Cheryl Rosenfeld, an associate professor of biomedical sciences in the University of Missouri College of Veterinary Medicine and an investigator in the Bond Life Sciences Center. “We wanted to determine if short-term feeding of widely available commercial canned food could alter BPA concentrations in dogs. Thus, we assessed BPA contained within pet food cans.

“We also analyzed whether disturbances in bacteria found in the gut and metabolic changes could be associated with exposure to BPA from the canned food.”

Even BPA-free cans

Dog owners volunteered their healthy pets for the study. Blood and fecal samples were collected prior to the dogs being placed on one of two commonly used, commercial canned food diets for two weeks; one diet was presumed to be BPA-free.

Robert Backus, an associate professor in the veterinary medicine and surgery in the College of Veterinary Medicine, and other researchers on the team then analyzed the cans and the food contained in the cans for BPA levels and performed gut microbiome assessments.


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“The dogs in the study did have minimal circulating BPA in their blood when it was drawn for the baseline,” Rosenfeld says. “However, BPA increased nearly three-fold after being on the either of the two canned diets for two weeks.

“We also found that increased serum BPA concentrations were correlated with gut microbiome and metabolic changes in the dogs analyzed. Increased BPA may also reduce one bacterium that has the ability to metabolize BPA and related environmental chemicals.”

Dogs who share internal and external environments with their owners are likely excellent indicators of the effects of BPA and other industrial chemicals on human health.

“We share our homes with our dogs,” Rosenfeld says. “Thus, these findings could have implications and relevance to humans. Indeed, our canine companions may be the best bio-sentinels for human health concerns.”

A Morris Animal Foundation grant and a Mizzou Advantage grant funded the study, which appears in Science.

Source: University of Missouri

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