River Ridge Veterinary Hospital

6790 River Center Drive
Clemmons, NC 27012

(336)712-3413

www.riverridgevet.com

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CANINE DILATED CARDIOMYOPATHY and the LINK to GRAIN FREE DIETS 

6/24/19

The U.S. Food and Drug Administration has identified more than a dozen brands of pet food it says are most frequently connected to a spike in reported cases of heart disease in dogs.

The FDA is continuing to investigate more than 500 reports of dilated cardiomyopathy, or DCM, in dogs eating certain types of pet food. A form of canine heart disease, DCM can cause congestive heart failure in dogs. "We know it can be devastating to suddenly learn that your previously healthy pet has a potentially life-threatening disease like DCM," Steven Solomon, director of the FDA's Center for Veterinary Medicine, said Thursday in a statement. Because the FDA has "not yet determined the nature of this potential link, we continue to encourage consumers to work closely with their veterinarians."

Dog Food Brands Named Most Frequently in DCM Cases Reported to FDA. Graph shows the dog food brands most frequently named in reports of DCM submitted to FDA. Acana 67; Zignature 64; Taste of the Wild 53; 4Health 32; Earthborn Holistic 32; Blue Buffalo 31; Nature’s Domain 29; Fromm 24; Merrick 16; California Natural 15; Natural Balance 15; Orijen 12; Nature’s Variety 11; NutriSource 10; Nutro 10; Rachael Ray Nutrish 10

DCM Reports to FDA - Most frequently reported dog breeds. Graph shows number of DCM reports for the most frequently reported dog breeds. Golden Retriever 95; Mixed 62; Labrador Retriever 47; Great Dane 25; Pit Bull 23; German Shepherd Dog 19; Doberman Pinscher 15; Australian Shepherd 13; Unknown 13; Boxer 11; Mastiff 8; German Short-haired Pointer 7; Shetland Sheepdog 7; Weimaraner 7; American Bulldog 6; American Cocker Spaniel 6; Standard Poodle 6; Bulldog 5; Shih Tzu 5

The FDA initially alerted the public to the cases plaguing dogs last July but did not specify food brands. The agency instead pointed to pet food labeled as "grain-free" and containing peas, lentils and other legume seeds and/or potatoes as their primary ingredients.

A new report from the Food and Drug Administration makes navigating the pet food aisle more complicated for dog owners. As The New York Times reports, the FDA has linked 16 popular dog food brands to canine heart disease—many of which bill themselves as healthier options.

The FDA traced adverse cardiovascular symptoms in dogs to many grain-free pet foods that replace ingredients like wheat and corn with peas, lentils, legume seeds, or potatoes. The brands included in the study—listed in descending order of most related heart disease cases—included Acana, Zignature, Taste of the Wild, 4Health, Earthborn Holistic, Blue Buffalo, Nature’s Domain, Fromm, Merrick, California Natural, Natural Balance, Orijen, Nature’s Variety, NutriSource, Nutro and Rachael Ray Nutrish.

Products from these brands are often marketed as "wholesome," "high-protein," and "all-natural" alternatives to conventional dog food. But the new report from the FDA shows that a grain-free diet can be potentially harmful to a dog's health. Between January 1, 2014 and April 30, 2019, the FDA received 560 reports of canine dilated cardiomyopathy, a condition that's typically seen in larger dog breeds and can lead to heart failure. Of those cases, 119 of them were fatal. Canine dilated cardiomyopathy is believed to be partly genetic, but according to the administration, many of the dogs they studied were not genetically predisposed towards the condition. The likely culprit behind their diagnoses was diet.

"We understand the concern that pet owners have about these reports: the illnesses can be severe, even fatal, and many cases report eating 'grain-free' labeled pet food," the FDA stated in the report. "The FDA is using a range of science-based investigative tools as it strives to learn more about this emergence of DCM [dilated cardiomyopathy] and its potential link to certain diets or ingredients."

Makers of grain-free pet food claim that kibble made from corn and wheat doesn't reflect the diet of dogs' wild ancestors, and is therefore bad for them. Canine heath experts say this is a myth: Wild canids like wolves ingest grains in the stomachs of the herbivores they hunt. What's more, grains contain vitamins, minerals, and fiber that dogs can benefit from.

Regardless of a dog's diet, pet owners should be aware of the symptoms of canine dilated cardiomyopathy. A dog that exhibits decreased energy, coughing, difficulty breathing, and episodes of collapse should be taken to the vet as soon as possible.

For more detailed information, please visit https://www.fda.gov/animal-veterinary/news-events/fda-investigation-potential-link-between-certain-diets-and-canine-dilated-cardiomyopathy

 http://mentalfloss.com/article/586890/fda-links-16-dog-food-brands-canine-heart-disease;  https://www.cbsnews.com/news/dog-food-and-heart-disease-fda-warns-16-dog-food-brands-may-cause-heart-disease-in-pets/ ; https://www.fda.gov/animal-veterinary/news-events/fda-investigation-potential-link-between-certain-diets-and-canine-dilated-cardiomyopathy ; https://www.fda.gov/animal-veterinary/news-events/fda-investigation-potential-link-between-certain-diets-and-canine-dilated-cardiomyopathy