Cushing’s disease—also known as hyperadrenocorticism—is becoming an increasingly common diagnosis in dogs, particularly as our pets live longer, healthier lives. As a canine nutritionist, I’ve witnessed a significant uptick in concerned pet parents looking for natural ways to support their dogs after diagnosis.

While Cushing’s is a complex hormonal condition that requires veterinary supervision, dietary adjustments can play a powerful role in managing symptoms and improving your dog’s quality of life.

🧠 What Is Cushing’s Disease in Dogs?

Cushing’s disease is caused by the overproduction of cortisol, the body’s main stress hormone. Cortisol helps regulate metabolism, immune response, and blood pressure—but in excess, it can become harmful.

Cortisol is produced by the adrenal glands, which are located near the kidneys. In dogs with Cushing’s disease, these glands are overstimulated due to various underlying causes.

🧪 Main Causes of Cushing’s Disease

1. Pituitary-Dependent Cushing’s Disease (PDH) 

• Caused by a benign tumor in the pituitary gland (in the brain)
• This tumor produces too much ACTH, which overstimulates the adrenal glands
• Most common in middle-aged to older dogs

2. Adrenal-Dependent Cushing’s Disease 

• Caused by a tumor on one of the adrenal glands
• Can be benign or malignant
• Occurs in dogs of all ages, but most often in older dogs

3. Iatrogenic Cushing’s Disease

• Caused by long-term steroid use (e.g., prednisone)
• Steroids mimic cortisol, and chronic use suppresses natural hormone regulation
• This type is medication-induced, not tumor-related

🐶 Symptoms to Watch For

Cushing’s disease often develops gradually, making early symptoms easy to overlook. Common signs include:

• Increased thirst and urination
• Increased appetite
• Pot-bellied appearance
• Hair loss or thinning coat
• Thin, fragile skin
• Lethargy or reduced activity
• Panting, even when resting
• Recurring skin infections or slow wound healing

🥦 The Role of Diet in Managing Cushing’s Naturally

Although nutrition cannot cure Cushing’s, it can significantly help manage symptoms such as weight gain, muscle loss, insulin resistance, high blood pressure, and immune suppression.

The goal of a natural diet is to support the adrenal glands, liver, immune system, and overall body function.

✅ Key Features of a Natural Diet for Dogs with Cushing’s

1. Low in Fat

• Protects the liver and pancreas
• Helps manage lipidemia (high blood fats)
• Supports healthy weight

2. Moderate to High-Quality Protein

• Helps maintain muscle mass
• Recommended sources: Rabbit, turkey, white fish, egg whites

3. Low to Moderate Carbohydrates

• Regulates blood sugar levels
• Choose complex carbs: Pumpkin or sweet potatoes or green beans or carrots

4. Rich in Antioxidants

• Reduces inflammation
• Boosts immune function
• Include: Blueberries, kale, spinach, broccoli, turmeric, parsley

5. Supports Liver Health

• Helps detoxify excess hormones
• Add:  Milk thistle, beets, turmeric

6. Omega-3 Fatty Acids

• Anti-inflammatory
• Promotes skin and coat health
• Sources: Fish oil (zinzino or Nordic) sardines, flaxseed oil (in moderation)

💡 Final Thoughts from a Canine Nutritionist

Cushing’s disease can feel overwhelming at first, but with the right veterinary care and nutritional support, your dog can live a long, happy life. A targeted, natural diet helps control symptoms and supports vital organs impacted by the disease.

If your dog has been diagnosed—or if you suspect Cushing’s—consult your vet and consider working with a qualified canine nutritionist to create a personalized meal plan.

Your dog’s health journey can be brighter with the power of whole foods, tailored care, and a little extra love. ❤️

Have questions or need help building a nutrition plan for your dog with Cushing’s? Reach out—I’d love to help you and your furry friend thrive. 🐾