5 Signs Your Dog’s Health Issues Might Be Diet-Related

You’ve been to the vet. Multiple times, probably.

They’ve run tests. Maybe prescribed medication. You’ve followed the instructions exactly as written. And yet—your dog still isn’t quite right.

The scratching continues. The digestive issues come and go. The energy isn’t what it used to be. Something feels off, but you can’t put your finger on what.

Here’s what nobody tells you at the vet’s office: a lot of chronic health issues in dogs have roots in what they’re eating.

Not all of them. But more than you might think.

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When Food Is the Missing Piece

I work with dog parents every single day who come to me after months—sometimes years—of treating symptoms without addressing the underlying cause. They’ve tried different medications, changed their walking routes to avoid allergens, bought expensive air purifiers.

But they haven’t changed the food.

Or they’ve changed the food multiple times, but without understanding what their dog’s body actually needs.

The signs that food might be contributing to your dog’s health issues aren’t always obvious. They don’t show up as immediate reactions the way a true food allergy might. Instead, they’re subtle. Chronic. The kind of thing where you think “that’s just how my dog is now.”

But what if it isn’t?

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Sign #1: The Symptoms Come and Go (But Never Fully Resolve)

Your dog has good weeks and bad weeks. Sometimes they seem totally fine—ears are clean, skin looks good, energy is normal. Then suddenly, everything flares up again.

You can’t figure out the trigger. It doesn’t seem connected to seasons or stress or anything you can identify.

What might be happening:

When symptoms cycle like this, it often points to inflammation in the gut. Your dog’s immune system is constantly reacting to something in their food, but the response isn’t severe enough to be obvious. It’s more like a slow simmer that occasionally boils over.

Common culprits include:

• Proteins your dog has been eating for years (yes, they can develop sensitivities over time)
• Ingredients that inflame an already compromised gut lining
• Foods that don’t match your dog’s constitution from a Traditional Chinese Medicine Food (TCM) Therapy perspective

You might notice:

• Ear infections that clear up with medication but return weeks later
• Itching that improves then worsens in cycles
• Digestive upset that comes and goes
• Energy levels that fluctuate without clear reason

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Sign #2: Your Dog’s Coat and Skin Keep Changing

This one’s tricky because it happens so gradually that you might not even notice it until you look at old photos.

Your dog’s coat used to be shiny and thick. Now it’s dull, or thinning in spots, or has a weird texture. Their skin might be flaky, or oily, or both at the same time, somehow.

What might be happening:

Skin and coat quality are direct reflections of gut health and nutrient absorption. If your dog’s digestive system is compromised—from food sensitivities, poor-quality ingredients, or an imbalanced diet—it shows up in their fur first.

Think of it like this: your dog’s body prioritizes essential functions first. Keeping the heart beating, the lungs working, the brain functioning. Maintaining a beautiful coat? That’s luxury spending. When resources are tight because of poor digestion or chronic inflammation, the coat suffers.

In TCM this could be what we call blood deficiency. The diet needs to be adjusted to nourish the blood. We can also turn to herbs to help.

You might notice:

• Coat is dull or brittle when it used to shine
• More shedding than normal
• Hot spots or areas of hair loss
• Dry, flaky skin or excessive oil production
• That “doggy smell” that won’t go away no matter how often you bathe them

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Sign #3: Chronic Low Energy (That Your Vet Can’t Explain)

Your dog isn’t sick, exactly. Bloodwork comes back mostly normal. Maybe a few values are slightly off, but nothing alarming. Your vet says “they’re just getting older” or “some dogs are just lower energy.”

But you remember what they used to be like. And this doesn’t feel right.

What might be happening:

Food is fuel. If your dog isn’t getting the right nutrients—or if they can’t absorb the nutrients from their food because of gut inflammation—they simply don’t have the energy they should.

In TCM this looks a lot like is called Qi deficiency. Or ATP energy needed to fuel your dog’s cells.

This is especially common in dogs eating:

• Low-quality kibble with poor protein sources
• Foods that don’t provide enough calories for their activity level
• Diets that lack bioavailable nutrients (meaning the nutrients are technically there on paper, but your dog’s body can’t actually use them)
• Too much protein (yes that is a thing) from improperly formulated cooked or raw recipes.

From a TCM perspective, we’d also look at whether your dog is eating foods that don’t support their constitutional needs. A dog who runs cold and needs warming foods but is eating a cooling diet will always feel sluggish.

You might notice:

• Reluctance to go on walks they used to enjoy
• Sleeping more than usual
• Less interest in play or activities
• Generally seeming “older” than their age would suggest
• Takes longer to recover after exercise

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Sign #4: Your Dog’s Behavior Has Changed (And Nobody Knows Why)

This one catches people off guard because we don’t usually connect behavior to food.

Your dog has become anxious when they used to be calm. Or reactive when they used to be friendly. Or clingy when they used to be independent. The change happened gradually enough that you adjusted to it, but when you really think about it—this isn’t who your dog used to be.

What might be happening:

The gut-brain connection in dogs is just as real as it is in humans. An inflamed, unhealthy gut produces inflammatory compounds that affect brain function. Nutrient deficiencies—especially B vitamins and omega-3s—can directly impact mood and behavior.

Additionally, if your dog doesn’t feel good physically (even if it’s subtle), it will show up in their behavior. Pain, discomfort, and chronic low-grade inflammation all contribute to irritability, anxiety, and behavioral changes.

You might notice:

• Increased anxiety or reactivity
• More “clingy” or needy behavior
• Less tolerance for things that used to be fine
• Restlessness or difficulty settling
• Changes in how they interact with family members or other pets

Signs like this could be a Shao Yang disharmony and again, dietary and herbal adjustments can be made to bring your dog back into balance.

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Sign #5: You’ve Tried Everything and Nothing Really Works

You’ve been to specialists. You’ve tried the prescription food your vet recommended. You’ve given the medications. You’ve followed all the advice.

And your dog is… managing. They’re not worse. But they’re not better either. You’re in this weird maintenance mode where you’re just trying to keep symptoms under control, but you’re not actually seeing healing happen.

What might be happening:

This is the sign that tells me someone’s treating symptoms without addressing root causes. And so often, the root cause lives in the gut.

When a dog’s gut health is compromised—whether from food sensitivities, poor-quality ingredients, or an imbalanced microbiome—their entire immune system is affected. That’s because about 70% of the immune system lives in the gut.

You can treat the skin issues, the ear infections, the digestive upset. But if you’re not healing the gut, you’re just playing whack-a-mole with symptoms.

You might notice:

• Brief improvements that don’t last
• Needing to use medications continuously rather than resolving the issue
• New symptoms appearing even as you treat the old ones
• A growing list of health concerns rather than improvement
• The feeling that you’re managing your dog’s health issues rather than resolving them

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So… Now What?

If you’re reading this and recognizing your dog in these patterns, I want you to know something: you’re not imagining it.

That feeling that food might be part of the puzzle? Trust it.

The challenge is that figuring out what your dog needs—and what they don’t need—isn’t as simple as switching to a different brand or trying the “best” food you read about online. Every dog is different. What heals one dog might not help yours at all.

This is where it helps to work with someone who can look at your dog’s complete picture—their symptoms, their history, their constitution—and create a plan that’s actually tailored to them.

If you’re feeling ready to explore whether food could help your dog heal, here are your next steps:

Option 1: Do Your Own Investigation

Start by tracking what your dog eats and how they respond. Keep a journal for 2-3 weeks noting:

• What they eat (including treats and supplements)
• Symptom patterns
• Energy levels
• Any changes you notice

This data will be valuable whether you end up working with someone or figuring things out on your own.

Option 2: Read More About Your Dog’s Specific Issues

If your dog has:

• Chronic itching, ear infections, or yeast → Read the Yeast Protocol
• Kidney disease → Start with kidney-friendly foods
• Digestive issues → Learn about gut health restoration
• Multiple chronic issues → Explore TCVM approaches

Option 3: Work With Me Directly

If you’re tired of guessing and you’re ready for a customized plan based on your dog’s specific needs, book a consultation here.

We’ll look at your dog’s health history, current symptoms, and what you’ve already tried. Then I’ll create a nutrition plan that addresses the root causes—not just the symptoms.

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One More Thing

I know this is overwhelming. You’re already doing so much for your dog. The last thing you need is one more thing to figure out.

But here’s what I’ve seen over and over: when we address the diet piece, everything else starts to fall into place. Symptoms that you were managing suddenly start resolving. Energy comes back. Your dog starts feeling like themselves again.

Not overnight. But steadily. Really.

You don’t have to figure this out alone.

Start with a consultation to see if food might be the missing piece for your dog →

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