Understanding Dilated Cardiomyopathy (DCM) in Dogs – And What You Can Do Naturally
Common Causes of DCM
Nutritional Deficiencies
Some dogs, especially Golden Retrievers and Cocker Spaniels, may struggle to make enough taurine or carnitine — amino acids essential for heart health. Certain grain-free diets, high in legumes and low in meat-based protein have been implicated as a contributing factor in DCM.
Genetic Risk Is 5%, 95% Is The Epigenetic Influence On Gene Expression
While breeds like Dobermans, Boxers, Great Danes, and Irish Wolfhounds have a known genetic predisposition to Dilated Cardiomyopathy (DCM), genes are not destiny. It is the epigenetic triggers, the environmental and lifestyle factors that often determine whether these genes are turned “on” or “off.”
Toxin exposure (such as heavy metals, glyphosate, mycotoxins, food preservatives and topical pesticides), combined with poor-quality diets (high in carbohydrates) and chronic stress, contributes to systemic inflammation and oxidative stress. These conditions damage mitochondria, the cell’s energy powerhouses impairing heart muscle function. Over time, the heart weakens, leading to the structural changes in the heart muscle resulting in DCM.
While genetics set the stage, it’s the environment and the pets lifestyle that write the script.
Supporting heart health in predisposed breeds means removing these stressors and restoring balance through proper detoxification, nutrient-dense species appropriate grass fed/grass finished diets, and holistic therapies that reduce inflammation and enhance mitochondrial function.
Diet:
A poor diet based on ultra-processed, non-organic kibble, is often:
- Low in bioavailable protein
- High in refined carbs and sugars (which spike insulin and increase systemic inflammation)
- Contaminated with glyphosate (a known mitochondrial toxin, endocrine disruptor and damages the tight junctions in the intestines and kidney)
- Lacking essential amino acids, minerals, and heart-supportive essential fatty acids
- Loaded with preservatives, artificial colors, and hormone-laden meat byproducts
The Grain-Free Diet Debate
Recent attention has focused on the potential role of grain-free diets in DCM. Grain-free diets often substitute grains with legumes (such as peas and lentils) and tubers (like potatoes). While these ingredients can meet basic nutritional requirements, they may inadvertently contribute to taurine deficiency through the mechanisms mentioned above. Studies have documented cases where dogs on grain-free diets developed DCM linked to taurine deficiency. Notably, many of these dogs showed improvement in cardiac function after dietary adjustments and taurine supplementation.
While the exact mechanisms remain under investigation, some evidence suggests that these ingredients may interfere with taurine absorption or synthesis. The role of grain-free diets in DCM has sparked widespread debate.
The FDA and veterinary researchers have investigated reports of dogs developing DCM while consuming diets high in legumes, peas, and lentils. Proposed mechanisms include:
- Reduced Taurine Bioavailability
Legumes may alter gut microbiota or bind taurine precursors, leading to reduced absorption or synthesis. - Dilution of Essential Nutrients
Diets heavy in plant-based ingredients lack sufficient meat-based protein, a critical taurine source.
Stress:
Chronic stress leads to inflammation and inflammation is the underpinning of all dis-ease. The inflammation will target the weakest link(s) in the body, which could be the heart in predisposed breeds. Chronic stress can be triggered by:
Chronic pain of osteoarthritis or degenerative disc disease
Metabolic stress that results from “leaky gut”. Leaky gut allows the influx of toxins and foreign material that continually trigger the immune system to be on the defense.
Over activation of the sympathetic nervous system resulting in elevated cortisol levels.
Comorbidities: Other existing health challenges that lead to inflammation
- Hormonal imbalances like hypothyroidism
- Chronic Infections or inflammation
- Toxins like glyphosate, mycotoxins, microplastics and heavy metals. Read more on Toxins Click Here! Read more on microplastics Click Here!
- Gut health issues “leaky gut”. Click Here for more on Leaky Gut!
- Obesity
- Dental disease
Recognizing the Signs of DCM
DCM can develop silently, making early screening critically important, especially for at-risk breeds. I recommend screening starting at 3 years of age and monitoring yearly.
Symptoms may include:
- Coughing or labored breathing
- Lethargy
- Fainting spells
- Exercise intolerance
- Weight changes such as weight loss
- Poor appetite
Diagnosing DCM:
A minimum workup should include:
- Echocardiogram (ultrasound) – shows heart structure
- ECG – detects abnormal rhythms
- X-rays – identifies heart enlargement or fluid
- Blood tests/Hair Analysis – taurine levels, NT-proBNP, minerals, toxins (glyphosate, mycotoxins, heavy metals, microplastics), CBC, chemistries, thyroid and urinalysis
Conventional Treatments
Veterinary cardiologists often prescribe:
- ACE inhibitors (e.g. enalapril) – reduce blood pressure
- Diuretics – help with fluid buildup
- Beta-blockers – regulate heart rhythm
- Taurine/carnitine supplements
Though these products can manage symptoms, they don’t address root causes.
The Integrative Approach to DCM identifies and resolves the root cause(s) which involves identifying deficiencies, toxicities and mitochondrial dysfunction:
Dietary Improvements
- Species-Appropriate grass fed/finished, free range or wild caught diet provides a high biological value.
Focus on high-quality, bioavailable proteins and healthy fats to support overall health, including heart health. These provide the building blocks for muscle function, including the heart muscle. Click Here for EvoLove Raw FAQS! - Digestive Enzymes, including pancreatic enzymes. Assist in the breakdown of proteins to enhance nutrient absorption and digestion.
- Support Gut Health And The Microbiome. Click Here For Supplement Recommendations!
- Heal Leaky Gut. Facilitate the uptake of amino acids by healing the gut and promoting a balanced microbiome.
- Supplement with Essential Vitamins, Minerals, Fatty Acids, and Amino Acids. Ensure adequate intake of these nutrients to support overall body function, including heart health.
- Reduce Inflammation. Limit inflammatory foods like processed grains and high-carb diets to reduce stress on the cardiovascular system and improve heart function. Omega-3 fatty acids (EPA and DHA) offer cardioprotective and anti-inflammatory benefits. Click Here For More!
Targeted Supplementation
- Taurine and Carnitine: Taurine is an essential amino acid critical for heart health. Supplementing with taurine, along with carnitine (another amino acid that supports fat metabolism), can help improve cardiac function and prevent further damage. Click Here For EvoLove Amazing Aminos!
- Essential Fatty Acids . Click Here To Learn More!
- Vitamins And Minerals
- Coenzyme Q10 (CoQ10) or Ubiquinol, refers to the same antioxidant compound, but they exist in two different forms. CoQ10 is the oxidized version, while ubiquinol is the reduced form.
- CoQ10: This is a naturally occurring antioxidant found throughout the body, particularly in the mitochondria, where it plays a key role in energy production. CoQ10 supports cellular processes that generate energy, especially in high-energy organs like the heart.
- Ubiquinol: This is the reduced form of CoQ10, meaning it has gained electrons and is in a more active state, making it a potent antioxidant. Ubiquinol is crucial for neutralizing free radicals and protecting cells from oxidative damage.
In the body, CoQ10 can be converted into ubiquinol, and vice versa, depending on the body’s needs for antioxidant protection or energy production. For example, when the body needs more antioxidants, CoQ10 is converted into ubiquinol to provide that support. Click Here for CoQ10!
Role in Cardiac Health: CoQ10 and ubiquinol are vital for mitochondrial function, which is essential for energy production, especially in heart cells. Supplementing with CoQ10 or ubiquinol can improve heart muscle function and overall vitality by ensuring that the heart’s cells have the energy they need to operate efficiently.
- Magnesium and Potassium: it’s important to regularly test magnesium and potassium levels, as these minerals play a critical role in heart health. Magnesium is essential for the proper function of the heart muscle and helps regulate electrical impulses that control heart rhythm. Potassium is equally vital for maintaining cellular function and fluid balance within the heart. Deficiencies in either of these minerals can significantly contribute to arrhythmias or exacerbate heart failure. Ensuring optimal levels through testing and appropriate supplementation is an important part of supporting overall cardiac health. Pasco Veterinary Medical Center has test kits for this. Reach out for more information!
- Milk Thistle: Found in Silymarin, can help with antioxidant defense, cell membrane protection and anti inflammatory action. Click Here For More!
Complementary Therapies for Heart Support help reduce stress on the heart and improve the immune system.
- Acupuncture: Acupuncture stimulates specific points along the body’s energy pathways, supporting circulation, reducing inflammation, and promoting balance within the body. This therapy can improve heart function by increasing blood flow, supporting the nervous system, and reducing stress.
- Ozone Therapy Has MANY positive effects on the body, including helping to stimulate antioxidant production while turning on over 200 anti inflammatory pathways.
- Assisted Lymphatic Therapy: This therapy promotes the efficient drainage of lymphatic fluid, which helps detoxify the body and reduce fluid buildup. For dogs with heart disease, lymphatic drainage can be particularly useful in managing fluid retention, which is a common symptom of heart failure. Caution must be used to not over burden the blood stream with extra lymphatic input. Assisted Lymphatic Therapy also supports immune function and helps alleviate congestion in the lymphatic system. Click Here To Learn More!
- Fascia Decompression Therapy: Fascia therapy targets the connective tissues surrounding muscles and organs, helping to release tension, reduce tightness, improve energy flow and improve mobility. This can be particularly beneficial for dogs with DCM, as it helps relieve strain in the body that may exacerbate cardiovascular stress. By promoting relaxation and improved tissue flexibility, fascia release helps support the immune system, overall physical comfort and heart health. Click Here To Learn More!
- Hyperbaric Oxygen Therapy (HBOT): Hyperbaric oxygen therapy increases the oxygen supply to the body’s tissues, including the heart. It enhances healing, reduces inflammation, and promotes tissue repair. For dogs with DCM, HBOT can help improve oxygen delivery to the heart and other vital organs, supporting recovery and potentially slowing disease progression. Click Here To Learn More!
- Detoxification: The 6 organs of elimination . Download the Free eBook on 6 Keys to Health and Healing pets, naturally. Click Here!
The alarming rise in chronic degenerative dis-eases affecting pets is sending a clear message, “What we are doing is not working!” As Einstein said, we can not solve problems with the same mindset that created them.
The fast, cheap and convenient lifestyle filled with processed foods and toxins must change to a sustainable model for people, pets and the planet.
By embracing a holistic, integrative approach, we have the opportunity to not only treat conditions like DCM more effectively, we have the opportunity to prevent dis-ease from starting. This shift allows us to move towards a more proactive, mindful way of supporting health, emphasizing prevention, nourishment, and healing in ways that honor the natural healing processes of the body. Embrace the opportunity to explore all available options, from conventional to integrative, and offer the best possible care for our pets.
There’s no better time to learn more and take action. By enrolling in The Empowered Pet Parent Course, you can change your pet’s life. This course offers the knowledge and tools you need to help your pets thrive, address chronic conditions, and extending their lives so they have the opportunity to live to 20 years and beyond.
Together, we can transform veterinary care — one heart at a time.
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Read MoreReferences
Merck Veterinary Manual – DCM in Dogs
Freeman, L.M. et al. “Diet-Associated Dilated Cardiomyopathy in Dogs.” JAVMA, 2021.
University of California – Grain-Free Diet Study
Pion, P.D., et al. “Taurine Deficiency and DCM.” JAVMA, 1998.
Martin, M.W.S., et al. “Canine DCM: Prognostic Findings in 367 Cases.” JSAP, 2010.
FDA. “Investigation into Grain-Free Diets & DCM”
Duke, J.L. & Lindley, S. Canine Rehabilitation and Physical Therapy, 2nd ed.
PMC; AtlantaSkinVet.com; Lionscourt Leonbergers
Disclaimer:
The content provided herein has not been evaluated by the Food and Drug Administration and reflects solely the professional opinion(s) of the author. It is not intended to serve as individualized medical advice, diagnose any condition, or endorse specific products or services for the treatment of illnesses. This information is strictly for educational purposes. It is advisable to seek guidance from a licensed healthcare professional of your choosing to pursue optimal health goals. Prior to initiating any changes mentioned herein or embarking on a new diet, exercise, or health regimen consultation with a licenced veterinarian is recommended. Any utilization of the information, resources, or recommendations contained herein is done at your own discretion and risk.
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