Vegetarians are often deficient in Vitamin B12, an essential nutrient, but several foods can help fill this gap.
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Vitamin B12 is vital for nerve health, red blood cell formation, and DNA synthesis. Vegetarians face deficiency risks since plant foods lack natural B12. Eggs, dairy, fortified nutritional yeast, cereals, and nori seaweed are reliable sources. Combining these foods with regular blood checks ensures vegetarians maintain energy, focus, and overall wellbeing.
Vitamin B12 is one of those tiny nutrients that just seems to be doing Herculean work inside you. From keeping your nerves working, to assisting the creation of red blood cells, to brain health and DNA synthesis, the recommended daily intake is 2.4 micrograms - a small amount that your body just cannot live without.
Herein lies the challenge, the nutrient is derived from bacteria and exists in almost all animal products.
According to the NIH, only foods that have been fortified contain Vitamin B12 among plant sources; the nutrient is non-existent in plant foods otherwise.1 Vegetarian (and especially vegan) diets are thus considered at high risk for a deficiency.
One review in Nutrients 2024 noted that the deficiency is considerably more prevalent in vegetarians than in the general population and can develop in vegetarian diets two years after eliminating animal foods.2
The good news? Vegetarians can obtain sufficient Vitamin B12 from careful selection of their foods, and so here are the top 5 you should keep an eye out for:
Perhaps the most available natural food rich in vitamin B12 is dairy products such as milk, which contains about 1.2 micrograms per cup, making up half the daily requirement.
One study has suggested that we absorb Vitamin B12 from dairy sources better than we do from eggs or fish, and it is widely confirmed to be one of the most readily available B12 sources among vegetarian foods.
Other sources like paneer, yogurt and various cheeses (like Swiss, at 38% for one slice) also contribute well to your day's intake. Eating them together can easily achieve the daily recommended intake.
As an excellent natural source of Vitamin B12 for vegetarians, two large eggs contain almost half of the daily required amount (46%).
More specifically, the nutrient is concentrated in the egg yolk, which means you benefit from the entire egg and are absorbing the B12 from that portion more efficiently compared to just eating the whites alone, as indicated by research.
You also get the only food known to contain natural Vitamin D, that most vegetarians often don't get enough of.
This may be considered among the greatest inventions in modern day culinary art for vegetarians, as one tablespoon of fortified nutritional yeast offers an immense amount of 2.4 micrograms of Vitamin B12 - equal to the total daily intake required by an adult.
According to the NIH, vitamin B12 is easily absorbable through this fortified variety of the supplement, which ensures that the body actually benefits from it. This supplement has a cheese-like taste and is somewhat nutty too. It can be used to season your sauces and soups.
Many vegetarians who struggle to obtain enough B12 from the sources above would find this as a reliable and well-researched alternative. One standard cup of fortified cereal will provide 25% of your daily value (with many exceeding that number).
In 2004, one study found that supplementing a diet with one cup of B12-fortified cereal each day successfully raised participants' blood levels within 14 weeks.3 The synthetic B12 form added during fortification is readily absorbed and makes it an ideal choice even if you have issues with absorption.
The only unfortified and plant-based nutrient proven by science to contain good levels of B12 is the plant of Dried Purple Seaweed, also known as nori.
Recent data from a 2024 study proposed that even 5g of the nutrient could increase blood levels of B12 quite drastically in both vegetarians and vegans and past studies have also shown that Dried Purple Laver is presently the most readily available natural plant source of B12.4
Dried purple seaweed can be used as a healthy snack or added to most noodle and rice dishes.
It is still worth while for all vegetarians to check their blood levels of B12 from time to time, especially when on a heavily plant based (vegan, most especially) diet.
Quadram Institute in UK advocates that 4-7mcg of a supplement per day should be taken on a plant predominant diet to prevent deficiency of B12 and it is because signs of such deficiency such as fatigue, pins and needles on limbs, problems with concentration and changes in moods, can take many years to become present, that it is crucial to be proactive.
Making sure you combine many of the food sources from above with regular blood tests is likely to be the most efficient way to keep yourself healthy.
What are the best natural sources of Vitamin B12 for vegetarians?
The best natural sources of Vitamin B12 for vegetarians include eggs, which provide about 46% of the daily need from two large eggs, and dairy products like milk, yogurt, and cheese, with milk containing around 1.2 mcg per cup. Nori (dried purple seaweed) is the only unfortified plant source shown to contain Vitamin B12.
How do fortified foods like nutritional yeast and breakfast cereals compare as B12 sources?
Fortified nutritional yeast can provide the entire daily Vitamin B12 requirement (2.4 mcg) per tablespoon, and fortified breakfast cereals typically offer around 25% or more of the daily value per cup. These fortified options use synthetic B12 forms that are well-absorbed, making them reliable alternatives for vegetarians who need to supplement dietary intake.
Is Vitamin B12 absorption better from dairy products compared to eggs for vegetarians?
Yes, studies suggest that Vitamin B12 is absorbed better from dairy products than from eggs or fish. Milk, cheese, and yogurt are widely considered among the most readily available and bioavailable B12 sources for vegetarians.
How important are regular blood tests for Vitamin B12 levels in vegetarians?
Regular blood tests are crucial for vegetarians, especially those on vegan or heavily plant-based diets, to detect potential Vitamin B12 deficiency early. Symptoms can take years to manifest, so proactive monitoring combined with diverse dietary sources or supplements helps maintain healthy B12 levels.
What is the recommended supplementation if a vegetarian diet lacks sufficient Vitamin B12?
According to the Quadram Institute, vegetarians with predominantly plant-based diets should consider a daily Vitamin B12 supplement of 4-7 mcg to prevent deficiency. Combining supplements with fortified foods and periodic blood testing ensures adequate B12 intake and absorption.
Disclaimer: This content is for general informational purposes only and should not replace professional medical advice. Always consult a qualified healthcare provider with any questions about your health or treatment options.
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