What To Feed For Vitamin D

Let’s talk about Vitamin D in dogs – it’s not just a vitamin, it’s a pro-hormone that’s absolutely crucial for your dog’s health. Think of it as the conductor of their cellular orchestra, influencing everything from bone health to immune function.

Here’s the kicker: unlike us humans, dogs can’t make Vitamin D from sunlight. They’re entirely dependent on their diet for this essential nutrient. This means what you feed your dog isn’t just food – it’s medicine.

Now, let’s break down the Vitamin D journey in your dog’s body:

1. Ingestion: Your dog eats Vitamin D (either D2 or D3) through food or supplements.
2. Liver transformation: The liver adds a molecule, creating 25-hydroxyvitamin D.
3. Kidney activation: The kidneys add another molecule, producing calcitriol – the superhero form of Vitamin D.

This active form, calcitriol, is like a master key, unlocking Vitamin D receptors throughout your dog’s body. It’s involved in hundreds of metabolic processes – talk about a multitasker! And…..these receptors are everywhere – from the bones to the brain, the immune system to the intestines.

When calcitriol binds to these receptors, it’s like flipping a switch. Suddenly, genes are being turned on and off, proteins are being made, and your dog’s entire body is responding. We’re talking about effects on bone health, immune function, muscle strength, and even mood. It’s regulating calcium levels, supporting the immune system, and even influencing cell growth.

But here’s the thing – like any powerful tool, the body keeps tight control over Vitamin D. Too little, and your dog might face issues like weak bones or a compromised immune system. Too much, and you could be looking at problems like excessive calcium in the blood.

It’s all about balance.

Dogs with conditions like pancreatitis, kidney disease, or immune disorders need extra attention to their Vitamin D levels. Vitamin D deficiency can have such wide-ranging effects on the body.

To simplify this complex topic, I’ve created a graphic that visually represents key information about Vitamin D levels in various ingredients we feed to our dogs. 

I used my own dog’s meal to build this graphic. For reference – they weigh 20lbs and eat 2x a day. I wanted to demonstrate how the portion/amount would fluctuate depending on what I fed to provide Vitamin D. 

Due to their size, I no longer feed sardines or anchovies and focus mostly on salmon, mackerel or cod liver oil to supply their Vitamin D.

So, how do we get it right?

1. Test, don’t guess: Get your vet to run a Vitamin D test. This is the gold standard for assessing Vitamin D status.
2. Food first: Opt for whole food sources of Vitamin D. But remember, not all sources are created equal. Some fish might not pack as much Vitamin D punch as you’d think.
3. Supplement wisely: If needed, supplement Rx Vitamin D3 ONLY under veterinary guidance. Remember, more isn’t always better. With small dogs, the difference from one drop to two drops a day can tip them over into toxic levels. I can’t stress this enough how important it is to know how much Vitain D3 to feed your dogs.
4. Consider the whole picture: Vitamin D doesn’t work in isolation. It needs partners like Vitamin K2, magnesium, and calcium to do its job effectively.
5. Regular monitoring: Vitamin D levels can change. Regular check-ups are key, especially if you’re supplementing.

Now, I know crafting the perfect diet for your dog might seem overwhelming. But here’s the truth: it’s not about perfection, it’s about progress. Each step you take towards understanding your dog’s nutritional needs is a step toward better health.

Remember, food is information. Every bite you feed your dog is sending instructions to their genes, influencing their health at the deepest level. By taking control of your dog’s nutrition, you’re not just a dog owner – you’re a health advocate, a nutritional therapist, and a loving guardian all rolled into one.

Wishing you and your dogs, good Health!

Resources:

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Barko, P. C., & Williams, D. A. (2018). Serum concentrations of lipid-soluble vitamins in dogs with exocrine pancreatic insufficiency treated with pancreatic enzymes. Journal of Veterinary Internal Medicine, 32(5), 1600–1608. https://doi.org/10.1111/jvim.15292
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