Dilated Cardiomyopathy in Dogs (DCM)
This is a very real problem even if we don't have all of the answers yet - Shane Murphy DVM
image by: Canine Heart Disease
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Nutritional Cardiomyopathy: Still A Major Problem In Dogs
There is no doubt that published scientific evidence to support what I see in the hospital on a daily basis is limited at this time; though many factors play a role in this, it is important to remember that this problem was recognized only a few years prior (2018) and research takes time to plan, perform, and publish. I have no doubt that more and more scientific publications are on the way to help shed more light on this problem. This "deficiency" is not a legitimate reason to ignore the current association between implicated diets and heart disease in dogs; this is a very real problem even if we don't have all of the answers yet.
Resources
DCM: What Pet Owners are Being Told Depends on the Source
We recommend if the pet was on a brand of food listed by the FDA, that taurine levels are checked to make sure the dog is not low in taurine, as low taurine has been linked to DCM in dogs on grain-free diets...
What is Dilated Cardiomyopathy (DCM)?
Dilated Cardiomyopathy (DCM) is one of the most common acquired heart diseases in dogs. This disease is rarely diagnosed in cats or small-breed dogs; however, it is a common cause of heart disease in large and giant breed dogs, and usually occurs more in those that are middle-to-older-aged.
Are Peas in Common Dog Foods Contributing to Canine Heart Disease?
At this time, the FDA is not advocating that pet owners discontinue using any specific brand. But studying legumes may lead scientists to the root cause.
Did Industry Funding Influence an FDA Investigation into Canine Heart Disease and Grain-Free Dog Food?
A six-month investigation by 100Reporters has found that veterinarians who prompted the FDA to consider diet have financial and other ties to the leading sellers of grain-inclusive pet foods.
Diet and Dilated Cardiomyopathy (DCM) In Dogs
Overall, it is important to remember that “correlation does not equal causation”. Not all grain-free diets are nutritionally equal, and it is likely misguided to point fingers at single ingredients or the “grain-free” aspect of diets as the cause of heart disease in dogs. The evidence shows that the issue is complex with both genetic and dietary factors likely being involved in the development of canine DCM. While FDA researchers work to uncover science-based facts and compile a comprehensive report, and additional research is ongoing to investigate the extent of potential diet-related heart problems in dogs, we recommend contacting your veterinarian with any concerns about your pet’s health.
Diet-associated dilated cardiomyopathy in dogs: what do we know?
Diet-associated DCM first came to light in cats in the late 1980s1 and in dogs in the mid-1990s.2 The association between diet and DCM in dogs has generally not been much in the news since the early 2000s, but over the past few years, an increasing number of DCM cases involving dogs appear to have been related to diet.
FDA pet food investigation: What to know about diet-related heart disease
Since the Food and Drug Administration first warned about a possible link between a potentially fatal canine heart condition and “grain free” pet foods in 2018, owners and veterinarians have continued to report cases of dogs developing diet-related dilated cardiomyopathy, or DCM.
FDA’s DCM probe starts with a roar, ends with a whimper
The investigation into any role grain-free pet food might play in cases of dilated cardiomyopathy seems to be ending in a rather quiet, inauspicious way.
Incidence of Canine Dilated Cardiomyopathy Diagnosed at Referral Institutes and Grain-Free Pet Food Store Sales: A Retrospective Survey
Dilated cardiomyopathy (DCM) is considered a predominantly inherited disease in dogs. Recent reports suggest an increased incidence of DCM in atypical breeds eating grain-free and/or legume-rich diets. Emerging communications have noted that there is an apparent increase in the DCM incidence rate in the United States (US). However, little data regarding the incidence of DCM are currently available.
Incidence of canine dilated cardiomyopathy, breed and age distributions, and grain-free diet sales in the United States from 2000-2019: A retrospective survey
Dilated cardiomyopathy (DCM) is considered a predominantly inherited disease in dogs. Recent reports suggest an increased incidence of DCM in atypical breeds eating grain-free and/or legume-rich diets. However, little data regarding incidence of DCM within the US is available; and no existing data quantifies DCM among breeds over time.
Is Your Dog’s Food Breaking Her Heart? An Inside Look at Grain-Free Diets and Heart Disease
The link between diets containing legumes and exotic meats and DCM is still unclear, but research continually exposes new theories.
Shedding light on the heart disease grain-free pet food conundrum
One potential culprit in these cases is the lack of the amino acid taurine in grain-free pet foods. However, the WSU statement notes that while taurine deficiency may play a role in the identified DCM cases, “it is unclear whether taurine deficiency is a cause or merely an association with yet unknown other dietary components.” Some breeds may be more sensitive to changes in nutritional components in their food, which may suggest breed-related differences in metabolism.
What Happens If My Dog Has DCM?
Luckily, though, this disease can be managed (and sometimes reversed!) if you can recognize the signs early enough and get your pup the right treatment from your vet.
‘Peas of Mind’: Pulse Ingredients in Dog Food Not Linked to Heart Problems, Says New U of G Research
Ingredients such as lentils, beans and field peas typically used in grain-free dog foods are safe for healthy dogs, according to new University of Guelph research. It’s a reassuring finding for dog owners worried about grain-free diets, which have surged in popularity and now make up almost half of the dog food market in Canada.
Nutritional Cardiomyopathy: Still A Major Problem In Dogs
There is still a lot we don’t know about what causes this nutritional cardiomyopathy in dogs, which is frustrating for us and our clients alike; ongoing research is searching for more answers, but many details regarding the association between these diets and DCM will likely remain unknown.
Cornell University College of Veterinary Medicine
The definitive cause of canine DCM is the subject of debate, although a number of factors including nutritional, infectious, and genetic predisposition have been implicated. The fact that canine DCM occurs at a higher incidence in specific breeds suggests a heritable genetic component to this disease, although it is likely that it’s etiology is multifactorial.
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