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It found that B12 deficiency was higher in vegans than vegetarians and that vegetarians report B12 deficiency irrespective of their demography, where they live, their age, and the type of vegetarian diet they eat

However, the very few surveys which have investigated vitamin B 12 deficiency in these countries have been based on local or district level data

Not for human consumption or therapeutic use

Physical symptoms may include weakness, pale or yellowish skin, numbness or tingling in extremities, balance difficulties, mood changes including depression or irritability, and tongue inflammation

Vegetarians and vegans lack dietary B12 sources unless they consume fortified foods

Methylcobalamin and adenosylcobalamin are pre-activated forms some practitioners prefer, particularly for individuals with genetic variations affecting B12 metabolism