Can cats eat nutritional yeast?

Are you a cat owner who’s always on the lookout for new ways to keep your furry friend healthy and happy? Then you might have heard of nutritional yeast – a superfood that’s been making waves in the health community. But can cats eat nutritional yeast too? And if they can, what are the benefits and risks?

In this blog post, we’re going to delve into the topic of nutritional yeast for cats. We’ll explore what exactly this ingredient is, how it differs from brewer’s yeast, and whether it’s safe for feline consumption. Plus, we’ll share some recommended serving sizes and potential side effects so you can make an informed decision about feeding your cat this nutrient-packed food.

So sit tight and get ready to learn all there is to know about nutritional yeast for cats. Whether you’re considering adding it to your kitty’s diet or just curious about feline nutrition, we’ve got you covered. And before we get started, let us tell you a little story that might surprise you…

What is Nutritional Yeast?

Can cats eat nutritional yeast-2

It’s a deactivated yeast that has become increasingly popular as a food supplement or seasoning in many vegan and vegetarian diets. Nutritional yeast is grown on a mixture of molasses and other nutrients, then harvested and dried for use in cooking. With its nutty and cheesy flavor, it’s an ideal addition to many dishes. But what makes nutritional yeast so special?

Firstly, nutritional yeast is packed with vitamins, minerals, and protein. It’s particularly high in B vitamins, including thiamin, riboflavin, niacin, vitamin B6, and vitamin B1It also contains trace minerals such as zinc, magnesium, and copper. These nutrients are essential for maintaining good health and can help boost the immune system.

Can cats eat nutritional yeast-3

Despite often being compared to brewer’s yeast, nutritional yeast is quite different. Brewer’s yeast is a byproduct of the beer-making process and has a bitter taste. Meanwhile, nutritional yeast has a rich flavor profile that can enhance the taste of many dishes.

Now let’s address the question on every cat owner’s mind: can cats eat nutritional yeast? The answer is yes. In fact, many cat owners use nutritional yeast as a supplement to their cat’s diet. Nutritional yeast is safe for cats and can provide some health benefits such as improving their coat and skin health, aiding in digestion, and boosting their immune system.

However, it’s important to remember that nutritional yeast should not replace your cat’s regular diet. Cats are obligate carnivores which means they require a diet that is high in protein and low in carbohydrates. Nutritional yeast can be given to cats as a supplement but should not be the primary source of nutrition.

It’s also important to introduce nutritional yeast slowly into your cat’s diet. Some cats may be allergic or sensitive to it which can cause digestive issues or skin irritations. Always consult with your veterinarian before introducing any new supplements or making significant changes to your cat’s diet.

Benefits of Nutritional Yeast for Cats

Look no further than nutritional yeast. This type of yeast is deactivated and often used as a dietary supplement for humans, but it’s also safe and beneficial for cats. Here are just a few reasons why you should consider adding nutritional yeast to your cat’s diet:

  • High in protein: Cats need protein to maintain healthy muscles and tissues, and nutritional yeast is an excellent source of high-quality protein. It contains all nine essential amino acids, making it a complete and nutritious protein source for your feline friend.
  • Rich in B vitamins: B vitamins are essential for the body’s metabolic processes, and they help maintain healthy skin, coat, and eyesight in cats. Nutritional yeast is packed with B vitamins, including thiamin, riboflavin, niacin, pyridoxine, folic acid, and cobalamin.
  • Immune system support: Nutritional yeast contains important minerals like zinc, selenium, and chromium that can help support your cat’s immune system. These minerals work together to protect against diseases and infections.
  • Low in fat and calories: If your cat is overweight or obese, nutritional yeast can be a great supplement as it’s low in fat and calories. It provides essential nutrients without adding extra calories to their diet.

Of course, nutritional yeast should not replace your cat’s primary diet as obligate carnivores. Instead, it should be used as a supplement to provide additional nutrients. As always, it’s important to check with your veterinarian before introducing any new supplements or changes to your cat’s diet.

How Much Nutritional Yeast Should Cats Eat?

Firstly, it’s important to know that nutritional yeast is safe for cats when consumed in moderation. This supplement is rich in protein, fiber, vitamins, and minerals – making it an excellent way to add some extra nutrients to your cat’s diet. However, it’s essential to keep in mind that cats have different dietary requirements than humans, and too much of any food can be harmful.

To ensure you don’t overfeed your cat with nutritional yeast, start with a small amount and gradually increase it over time. Experts recommend no more than 1/4 teaspoon of nutritional yeast per day for cats. However, this amount may vary depending on your cat’s size, age, and overall health.

It’s crucial to note that nutritional yeast should never replace a balanced and complete diet. Although it can provide some additional nutrients, it should only serve as a supplement. Always feed your cat high-quality commercial cat food that meets all their dietary needs. If you have any concerns about your cat’s diet, consult with your veterinarian.

Potential Risks of Feeding Cats Nutritional Yeast

Nutritional yeast, a popular supplement for humans, has become a topic of concern for cats due to its potential risks. Let’s dive deeper into the possible dangers of feeding cats nutritional yeast.

One major issue is the high levels of protein and purines found in nutritional yeast. While humans may benefit from plant-based protein, cats require a diet rich in animal-based protein. Too much plant-based protein can lead to digestive troubles and potentially deadly kidney damage. Furthermore, excessive purine intake can lead to the formation of urinary crystals and stones, causing blockages that can be incredibly dangerous.

Another concern is the presence of yeast in nutritional yeast. Yeast is a type of fungus that can cause allergies and sensitivities in cats. Some cats may experience symptoms such as itching, redness, and skin irritation when exposed to yeast. In severe cases, ingestion of yeast can even lead to systemic fungal infections.

Lastly, nutritional yeast often contains added vitamins and minerals that may not necessarily benefit cats. Over-supplementation can cause toxicity and throw off the balance in their diet. Before introducing any new food or supplement to your cat’s diet, it’s always best to consult with a veterinarian.

Is Nutritional Yeast the Right Supplement for Your Cat?

Let’s explore the potential benefits and risks of feeding your cat nutritional yeast.


  • Nutritional yeast is packed with protein, fiber, vitamins, and minerals that can benefit your cat’s overall health. It can support their immune system and promote a healthy skin and coat.
  • Some cats may enjoy the taste of nutritional yeast, making it an appealing treat or food enhancer.
  • Nutritional yeast is low in calories, which can aid in weight management for overweight cats.


  • Cats have unique nutritional needs as obligate carnivores. They require a diet that is high in animal protein and low in carbohydrates, which nutritional yeast does not provide.
  • Nutritional yeast contains high levels of fiber that can cause digestive issues such as diarrhea or constipation if consumed excessively.
  • Nutritional yeast may contain added vitamins that can be toxic to cats if consumed in large quantities.

Tips for Introducing Nutritional Yeast to Your Cat’s Diet

Adding nutritional yeast to their diet can be a great way to achieve this goal. Nutritional yeast is a rich source of protein, vitamins, and minerals that can benefit your cat’s overall health. However, introducing a new food item to your cat’s diet can be challenging. Here are some tips on how to do it safely and effectively:

Start Slow

Start by adding a small amount of nutritional yeast to your cat’s regular food and gradually increase it over time. This will allow your cat’s digestive system to adjust to the new addition to their diet. By starting slow, you can avoid overwhelming their taste buds.

Mix It In

Nutritional yeast can be mixed into your cat’s regular food. This will help them get used to the taste and texture of the yeast. You can also mix it in with wet food or use it as a topping for dry food.

Use It As A Treat

Nutritional yeast can be used as a treat for your cat. Sprinkle a small amount on top of their food or offer it as a snack. This will help make the introduction enjoyable for your feline friend.

Watch For Allergic Reactions

While nutritional yeast is generally safe for cats, some may have allergic reactions to it. Watch for any signs of an allergic reaction, such as vomiting or diarrhea, and consult your vet if necessary.

Choose High-Quality Nutritional Yeast

Make sure you choose a high-quality nutritional yeast that is specifically designed for cats. Avoid using nutritional yeast meant for human consumption as it may contain ingredients that are harmful to cats.

Alternatives to Nutritional Yeast for Cats

While nutritional yeast may be a popular choice for humans looking to boost their own health, it may not be the best option for your feline companion. However, fear not. As an expert on cat nutrition, I have some alternative options that can help support your cat’s overall health and wellbeing.

First up, we have brewer’s yeast. This byproduct of the beer-making process is packed with B vitamins, amino acids, and minerals that are essential for your cat’s health. It can be easily found at your local pet store or online, and it can be added to your cat’s food as a supplement. Not only is brewer’s yeast nutritious, but it also has a savory taste that most cats love.

Another great alternative to nutritional yeast for cats is dried liver. Dried liver treats are easily accessible at most pet stores or can be made by dehydrating fresh liver in the oven. Besides being a tasty treat for your feline friend, dried liver is an excellent source of protein, iron, and vitamin A – all important nutrients for cats.

Last but not least, eggs are another fantastic option to consider. Eggs are an excellent source of protein and contain essential amino acids that are vital for your cat’s overall health. Scrambled or boiled eggs can be fed to your cat as a treat or mixed into their food as a supplement.

It’s crucial to note that while these alternatives are safe for most cats, it’s always best to consult with your veterinarian before making any changes to your cat’s diet. Additionally, introducing any new supplement or treat slowly and watching out for any allergic reactions is necessary.

-dp5Pi79iB0″ >


To sum up, incorporating nutritional yeast into your cat’s diet can be a fantastic way to boost their overall health, as it is packed with protein, B vitamins, and minerals. However, it is essential to introduce this supplement gradually and with caution since it should not replace their primary diet as obligate carnivores.

It’s best to use nutritional yeast as a treat or food enhancer rather than the primary source of nutrition. If you notice any allergic reactions or digestive issues in your feline friend after introducing nutritional yeast, contact your veterinarian immediately.

Before making any significant changes to your cat’s diet or introducing new supplements like nutritional yeast, always consult with your veterinarian. They will provide you with the best advice on how to incorporate this supplement into your cat’s diet safely.

If you’re looking for alternative options to nutritional yeast, consider brewer’s yeast, dried liver treats, or eggs. These options are also excellent sources of nutrients that can benefit your cat’s health.

Remember that maintaining a balanced and complete diet is crucial for your cat’s health and wellbeing. Nutritional yeast can be an excellent addition to their diet when used correctly, but it should never replace their primary source of nutrition.