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DCM Report: Incidence Rate Shows No Correlation to Grain-Free Growth

Posted on March 26, 2022 | Leave a comment

Veterinarians and scientists from BSM Partners, the largest pet care research and consulting firm, and the University of Missouri, published an analysis of a retrospective survey that evaluated the annual incidence of canine dilated cardiomyopathy (DCM) diagnosed by veterinary cardiologists across the United States, along with previously unknown information regarding the growth of grain-free pet food store sales.

The peer-reviewed article, which appears in Frontiers in Animal Science, includes data that did not indicate a significant increase nationally in DCM incidence over time, from 2000 to 2019, while grain-free pet food store sales grew 500 percent between 2011 and 2019. Researchers also found no significant correlation between the national DCM incidence rate in relation to the grain-free pet food sales.

Researchers received information on more than 68,000 total canine cardiology cases from veterinary cardiology referral hospitals, diagnosed between 2000 and 2019. The average incidence rate of DCM, amongst these referral cases seen in participating hospitals during the survey period, was 3.9 percent (range 2.53-5.65 percent). They also analyzed data regarding grain-free pet food store sales provided by the Nielsen Company, which showed a 500 percent increase in sales from 2011 to 2019.

“Based on the data we received from veterinary cardiologists across the United States, we did not observe a significant increase in DCM incidence rate over time, which included the recent period when grain-free pet food sales grew exponentially,” said Dr. Stephanie Clark, PhD, CVT, PAS, CFS, Dpl. ACAS of BSM Partners, an article co-author and a board-certified companion animal nutritionist. “The existing scientific literature indicates that nutritional factors can lead to the development of DCM, but we did not find a correlation in the DCM incidence rate to grain-free pet food sales.”

Dr. Stacey Leach DVM, DACVIM, an article co-author, and Chief of Cardiology and Associate Teaching Professor of Cardiology at the University of Missouri’s Veterinary Health Center, noted the following: “This work is unique because we only examined cases of canine DCM diagnosed by veterinary cardiologists and is a significant addition to our understanding of DCM.”

BSM Partners is the largest full-service pet care research, consulting and strategy-to-shelf product innovation firm. BSM Partners’ research professionals collaborate with hundreds of clients ranging from the largest companies to the smallest upstart companies to formulate, review and advise on the development of hundreds of new products each year, including grain-free and grain-inclusive dog foods, treats, and supplements.

Read the journal article here.

Source: Pet Age

Do grain-free diets really cause canine heart disease?

Posted on July 18, 2018 | Leave a comment

You may have heard that on July 12th, the US Food and Drug Administration issued a statement that it was investigating a potential connection between grain-free diets and canine heart disease:

The U.S. Food and Drug Administration is alerting pet owners and veterinary professionals about reports of canine dilated cardiomyopathy (DCM) in dogs eating certain pet foods containing peas, lentils, other legume seeds, or potatoes as main ingredients. These reports are unusual because DCM is occurring in breeds not typically genetically prone to the disease. The FDA’s Center for Veterinary Medicine and the Veterinary Laboratory Investigation and Response Network, a collaboration of government and veterinary diagnostic laboratories, are investigating this potential association.

Canine DCM is a disease of a dog’s heart muscle and results in an enlarged heart. As the heart and its chambers become dilated, it becomes harder for the heart to pump, and heart valves may leak, leading to a buildup of fluids in the chest and abdomen. DCM often results in congestive heart failure. Heart function may improve in cases that are not linked to genetics with appropriate veterinary treatment and dietary modification, if caught early.

The underlying cause of DCM is not truly known, but is thought to have a genetic component. Breeds that are typically more frequently affected by DCM include large and giant breed dogs, such as Great Danes, Boxers, Newfoundlands, Irish Wolfhounds, Saint Bernards and Doberman Pinschers. It is less common in small and medium breed dogs, except American and English Cocker Spaniels. However, the cases that have been reported to the FDA have included Golden and Labrador Retrievers, Whippets, a Shih Tzu, a Bulldog and Miniature Schnauzers, as well as mixed breeds.

Full text of the FDA statement here.

Investigating possible links is always a good thing; but equally concerning is understanding what data backs up any claim.

Pet Business magazine points out that the data backing up the link is very thin – at this point unlikely to pass the rigor of a peer-reviewed journal. Obviously an industry body has concerns about the impact of consumer choices and the impact on sales, but it is right that they point out that the data set so far is quite limited.

I follow research regularly, and I’m always open to findings that may cause us to re-think our choices of food and other healthcare strategies for our dogs.

But let’s be sure about evidence.

The availability and variety of grain-free foods has increased dramatically in recent years, as cases of itchy dogs and dietary intolerances caused by corn and wheat have been documented. Who’s to say that grain-free carbohydrates like peas, lentils and potatoes might not also come with side effects?

And all of this debate reinforces my belief in the hybrid diet. Sometimes raw, sometimes kibble, and sometimes homemade. Diversification is a strength!

Kathleen Crisley, specialist in dog massage, rehabilitation and nutrition/food therapy, The Balanced Dog, Christchurch, New Zealand