Evidence
Vitamin B12 is not reliably supplied by ordinary unfortified plant foods.
1 sourceCreated Sep 20, 2026Updated Sep 20, 2026
This is the most common serious nutritional objection to veganism, but it is also one of the cleanest problems to solve because supplementation and fortification are well-understood.
Used as evidence for
Well-planned vegan diets can meet nutritional needs across most life stages when key nutrients are deliberately managed.
CounterPlant-based diets usually require reliable vitamin B12 intake through fortified foods or supplements.
Supports