Common causes of vitamin B12 deficiency include inadequate dietary amounts (eg, in vegans), impaired absorption, age-related decreased acid secretion, and autoimmune metaplastic atrophic gastritis (which causes pernicious anemia).
Vitamin B12
₨ 1,900
Vitamin B12 deficiencies are most often caused by pernicious anemia, a condition in which the body does not make enough healthy red blood cells.
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