Excess of Vitamin B12 could be harmful
It is a water-soluble vitamin that is needed by all cells of the body, as evidenced by the role played in following functions:
DNA synthesis and bioavailability of amino acids
Maintenance of brain functions and production of red blood cells
Absorption of folic acid
We take Vitamin B12 from many foods that we consume every day:
Red meat
Poultry
Seafoods
Egg
Enriched corn flakes.
However, vitamin B12 deficiency can be seen in many people.
Irreversible nerve injury (Conditions such as psychosis, mania and dementia)
Anemia and tiredness (shortness of breath and irregular heartbeat)
Numbness/tingling in hands and feet
Vulnerability to effects of infection is among the serious complications that can be caused by vitamin B12 deficiency; thus vitamin B12 levels should be monitored and supplements should be used, if necessary.
Deficient intake of animal-originated foods,
Pernicious anemia (an immune system disorder
Disorders of small intestine
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