Chronic Diseases & Special Conditions
DCM & Grain-Free Dog Food: The Risk You Need to Know
FDA reports link certain grain-free dog foods to Dilated Cardiomyopathy (DCM). Learn about the potential risks and what you can do to protect your pet.
When to see a vet IMMEDIATELY
- •Blood in stool or vomit
- •Lethargy, not drinking, or not eating for 24+ hours
- •Repeated vomiting, especially if water won't stay down
- •Swollen or painful abdomen, whimpering
- •Diarrhea lasting more than 3 days, or worsening symptoms
This article is informational and does not replace veterinary examination.
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DCM and Grain-Free Dog Food
DCM (Dilated Cardiomyopathy) is a serious heart disease. In recent years, a significant link has been observed between certain grain-free / "BEG" dog foods and DCM.
What is "BEG" Dog Food?
Characteristics of suspicious foods investigated by the FDA:
- Boutique (small brands)
- Exotic protein (kangaroo, crocodile, ostrich)
- Grain-free (containing legumes: peas, lentils, chickpeas)
Proposed Mechanisms
Hypotheses:
- Legumes/potatoes inhibit taurine absorption
- Incomplete amino acid profile in some BEG foods
- Altered gut microbiome effect
At-Risk Groups
Genetically Predisposed Breeds: Doberman Pinscher, Boxer, Great Dane, Cocker Spaniel, Newfoundland, Irish Wolfhound, Golden Retriever.
Diet-Associated DCM: Any breed is at risk after prolonged feeding of BEG diets.
WSAVA Recommendations
- Avoid BEG diets (unless there's a confirmed grain allergy)
- Choose reputable, research-backed brands (Royal Canin, Hill's, Purina, Eukanuba)
- Grain-free diets are only justified when medically necessary
Symptoms of DCM
- Rapid or irregular heartbeat
- Difficulty breathing (especially at night)
- Coughing
- Fainting, weakness
- Abdominal fluid (ascites)
Diagnosis
- Echocardiography
- Holter ECG
- Blood taurine levels
Treatment
- Switching to a reputable brand of dog food
- Taurine supplementation (as recommended by a veterinarian)
- L-Carnitine
- Cardiac medications
Good news: Diet-associated DCM is often partially reversible after a diet change.
Practical Advice
If you are currently feeding a grain-free diet:
- Consult your veterinarian
- For at-risk breeds, consider an echocardiogram
- Consider switching diets if there's no confirmed grain sensitivity
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References
- 1.Freeman LM, Stern JA, Fries R, Adin DB, Rush JE — Diet-associated dilated cardiomyopathy in dogs: what do we know?. Journal of the American Veterinary Medical Association 253(11):1390–1394, 2018. https://doi.org/10.2460/javma.253.11.1390 (accessed: 2026-09-10)
- 2.U.S. Food and Drug Administration, Center for Veterinary Medicine — FDA Investigation into Potential Link between Certain Diets and Canine Dilated Cardiomyopathy. FDA, 2022. https://www.fda.gov/animal-veterinary/outbreaks-and-advisories/fda-investigation-potential-link-between-certain-diets-and-canine-dilated-cardiomyopathy (accessed: 2026-09-10)
- 3.FEDIAF (European Pet Food Industry Federation) — Nutritional Guidelines for Complete and Complementary Pet Food for Cats and Dogs. FEDIAF, 2024. https://europeanpetfood.org/self-regulation/nutritional-guidelines/ (accessed: 2026-09-10)
- 4.National Research Council (US), Committee on Animal Nutrition — Nutrient Requirements of Dogs and Cats. National Academies Press, Washington DC, 2006. https://doi.org/10.17226/10668 (accessed: 2026-09-10)
This is general information and does not replace a veterinary diagnosis.
This guide was compiled based on the expert input of Reka Fazekas-Birizdo canine nutritionist.
Certified Canine Nutritionist
