Should Vegans Rely on Nutritional Yeast for Vitamin B12?

The first time I tried nutritional yeast I bought it because every vegan blogger said I should try it circa 2016. I was skeptical at the time, but now it's a staple in my kitchen. I use it almost daily. But I use it intentionally.

As a vegan and registered dietitian, I see two common things come up around nutritional yeast. The first is that many people assume all nutritional yeast has B12. Second is many overestimate how much nutrition they're actually getting from it which is what I want to highlight in this article. 

Why Vegans Call It "Nooch"

Nutritional yeast is often nicknamed "nooch," a shortened, casual version of "nutritional." I wanted to know where this nickname started, so I did some digging on the world wide web. The word "Nooch" traces back to Isa Chandra Moskowitz, a popular vegan influencer and cookbook author with a long-standing social media presence.

I reached out to Isa for more details on how "Nooch" came about, and in the early 2000s her brand "Post Punk Kitchen" used the nickname in a video and it spread like wildfire, becoming a household name. Isa shared that she did not make up the term "Nooch," but she is largely responsible for popularizing the nickname.  

Does Nutritional Yeast Really Have B12?

Sometimes, but in practice, I see many people assume all brands are fortified, and the B12 content ranges widely.

Only fortified nutritional yeast has added B12. Unfortified versions do not naturally provide reliable B12. If you're using unfortified brands and think you've got your B12 covered, it's not. 

Check the label on your nutritional yeast. If B12 is not listed in the nutrition facts, you'll need a reliable source of B12 or switch to a fortified version.

How Much B12 Can You Get From Nooch?

It depends on the brand. Some fortified products provide 100 percent or more of your daily B12 in just 1 to 2 tablespoons; others provide less.

I still recommend that most vegans use a dedicated B12 supplement. Nutritional yeast can help support intake, but I do recommend relying on it alone unless you are very consistent and have regularly reviewed labs.

B12 recommendations for vegans are to

• Eat fortified foods two or three times a day to get at least three micrograms (mcg or µg) of B12 a day
• OR  Take one B12 supplement daily providing at least 10 micrograms
• OR  Take a weekly B12 supplement providing at least 2000 micrograms.

Fortified vs Unfortified: Which Should You Choose?

Fortified nutritional yeast has added vitamins, most commonly B12. This makes it an easy option for vegans who want to support their B12 intake without relying solely on supplements. Fortified is generally the safer choice for those at risk of B12 deficiency

If you follow a fully plant-based diet and are not consistently supplementing with B12, choose a fortified option. If you already take a reliable B12 supplement and simply want the flavor, unfortified is fine. Either way, read the label. Nutrient levels vary widely by brand.

Is Nutritional Yeast a Good Protein Source?

Two tablespoons provide around 5 to 8 grams of protein depending on the brand. That is helpful, but it is not a primary protein source. I think of it as a protein booster layered onto meals that already have a core plant protein like tofu, lentils, tempeh, or beans. If you are trying to hit 20 grams of protein at a meal nutritional yeast should complement, not carry your plate.

Why I Keep Nooch in My Kitchen

That savory, umami flavor helps reduce the need for excess salt or oil. Many new vegans struggle with meals feeling flat. A tablespoon of nutritional yeast can change that quickly. It is also convenient. No cooking required. No prep time. Just sprinkle and stir.

How I Use Nooch Day to Day

Here are three ways I use it every week:

1. Avocado toast: Mash avocado with lemon juice and spread on whole grain toast, sprinkle 1 tablespoon of nutritional yeast on top for added flavor and a protein boost.
2. Roasted vegetables: Toss broccoli, cauliflower, or zucchini with garlic and lemon juice after roasting, then finish with 1 to 2 tablespoons of nutritional yeast for a savory boost without needing more salt.
3. Creamy sauces: Blended with soaked cashews, garlic, and lemon juice for a dairy-free sauce over pasta or roasted vegetables.

There are some recipes on my site that have nutritional yeast:

• Eggy Scrambled Tofu Seasoning Blend
• Easy Vegetarian Buffalo Dip in a Slow Cooker
• Vegan Walnut Taco Meat

Can You Eat Nooch Every Day?

For most people, yes. I use it several times per week without issue. Very large amounts may cause mild digestive discomfort for some, but typically it is well tolerated. If you have specific concerns about nutritional yeast please consult with your dietitian or doctor for personalized recommendations. 

Nooch-ritional Benefits

Nutritional yeast supports a balanced vegan diet in many ways.

• Plant-Based Protein: Its plant-based protein helps maintain muscle mass, support recovery after activity, and keep you feeling full. (5g+ per two tablespoons!)
• Fiber: Fiber can aid digestion and help maintain steady blood sugar levels (2g+ per two tablespoons!) 
• Fortification: Some brands with fortification provide B vitamins, including B12, which is essential for energy production, healthy nerve function, and red blood cell formation. 
• Minerals: Zinc, selenium, and iron are available in some products that support immune health, antioxidant protection, and oxygen transport. 

Reading labels helps you choose a brand that meets your specific nutritional needs.

Nutritional yeast can be a helpful tool in a vegan kitchen, but it works best when you understand what it does and what it does not provide. 

Whether you choose fortified or unfortified, the bigger picture is making sure your overall nutrient needs are covered. Take a closer look at your nutrient intake and make adjustments as needed.