Doctors warn vegans to take risks of vitamin B12 deficiency seriously Veganism The Guardian Vitamin B12 for Vegans: Methylcobalamin vs Cyanocobalamin. Do you follow a vegan diet? Did you know that vitamin b12 is mainly present in animal based products so those following a strict plant based are more likely to be deficient in vitamin Do you follow a vegan diet? Did you know that vitamin b12 is mainly present in animal based products so those following a strict plant based are more likely to be deficient in vitamin Vegan Vitamin B12: What Vegans Need to Know World of Vegan