Vitamin B12 deficiency | Vitamin B12 – cobalamin
Vitamin B12 deficiency A lack of vitamin B12 is relatively common. Vitamin B12 has a very long half-life by nature, which means that a deficiency only becomes apparent after several years. As a rule, a slight vitamin B12 deficiency is therefore not noticeable. Only a longer or more severe deficiency then also appears with symptoms. … Vitamin B12 deficiency | Vitamin B12 – cobalamin