https://www.eufic.org/en/vitamins-and-minerals/article/vitamin-b12-foods-functions-how-much-do-you-need-more
Vitamin B12: foods, functions, how much do you need & more | Eufic
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https://www.phillyvoice.com/vitamin-b12-deficiency-serious-risk-vegans-experts-say/
Vegans need to get their vitamin B12 from supplements and fortified foods | PhillyVoice
Dec 19, 2019 - Experts say that vitamin B12 deficiency is not a myth and that vegans need to properly plan their diet so they get enough of this essential micronutrient.
https://www.helsinki.fi/en/news/healthier-world/fermentation-adds-vitamin-b12-plant-based-foods-naturally
Fermentation adds vitamin B12 to plant-based foods naturally | University of Helsinki
Vitamin B12 is naturally present in animal products, but it could be added to foods such as bread or yoghurt-type products through fermentation.
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