Vitamin B12: animal foods, fortified products and plant-based choices

Fish, seafood, meat, eggs, milk and dairy products can provide vitamin B12. Content varies with the food, preparation and portion, so no universal ranking applies to every meal.

Some plant drinks, breakfast cereals, nutritional yeast and other products may be fortified with B12. Fortification depends on the specific product, not the whole category. Check whether B12 is listed, the amount per serving and the stated frequency of use.

A vegan diet can be planned, but it needs a reliable B12 source: regularly used fortified foods or an appropriate supplement. Relevant frequency and form depend on the product and the person; do not infer a general dose from one example.

Older adults and people with pernicious anaemia, digestive disorders or previous gastrointestinal surgery may have a higher risk of deficiency. Breastfed infants whose vegan mother has inadequate B12 intake are also a specific situation.

1. 01Identify any animal foods eaten.
2. 02For each plant product, read the B12 line on the label.
3. 03Check the serving and actual regularity of use.
4. 04If no reliable source is present, ask a professional before choosing a supplement.

The choice is not automatically animal versus plant. Animal foods provide B12 naturally; fortified products can offer a plant-based option when checked and used regularly. When needs or circumstances are uncertain, a health professional should guide the next step.

1. 01NIH Office of Dietary Supplements, 2024 — https://ods.od.nih.gov/factsheets/vitaminb12-healthprofessional/
2. 02EFSA, 2015 — https://www.efsa.europa.eu/en/efsajournal/pub/4150
3. 03ANSES, 2022 — http://anses.fr/en/content/health-effects-vegetarian-diets-and-associated-dietary-guidelines
4. 04NHS, 2024 — https://www.nhs.uk/conditions/vitamin-b12-or-folate-deficiency-anaemia/causes/