Do fermented foods contain vitamin B12?

Written by
Stella Nilsson
Reviewed by
Prof. Benjamin Murphy, Ph.D.Vitamin B12 is naturally present in limited fermented foods. Bacterial activity during fermentation can create this essential nutrient. However, the amount of B12 varies widely depending on the product. Understanding the variability of B12 helps ensure sufficient intake is met for energy and nerve health.
Natural Producers
- Certain bacteria synthesize B12 during fermentation
- Tempeh and miso often contain measurable amounts
- Traditional fermentation methods enhance production
Fortified Options
- Nutritional yeast frequently includes added B12
- Check labels for cyanocobalamin or methylcobalamin
- Provides reliable vegan-friendly sources
Testing Importance
- Lab verification confirms actual B12 content
- Natural levels fluctuate between batches
- Essential for those avoiding animal products
People who are vegetarians or vegans have specific challenges. Dairy ferments still provide B12, even if people do not believe that. Dairy cultivars supply B12; no natural food provides sufficient B12. Fortified nutritional yeast is the best alternative. Tempeh supplies some B12, but confirming possibilities is more efficient. A reasonable combination of these with B12-containing fungi or supplements ensures exponential benefits.
Test actual B12 levels using laboratory analysis; natural production will differ based on the number of fermentation cycles. As long as manufacturers are reputable, they can provide third-party verification. You're looking for a certificate of analysis, where possible. This really helps to fend off deficiencies in plant-based diets.
Stay focused on consistent intake strategies. Use fortified nutritional yeast on top of meals every day and sprinkle it on soups, salads, or popcorn. Incorporate tempeh multiple times a week. Monitor your energy levels and consult with qualified professionals about supplementing when necessary. This is a comprehensive plan to ensure good B12 status in the long run.
Read the full article: 10 Amazing Benefits Fermented Foods Offer