ICD·index Chapters ENESDE
5B5F category

Vitamin B12 deficiency

Definition

Vegetarianism and poverty-imposed near-vegetarianism are the most common causes of nutritional cobalamin insufficiency worldwide in all age groups. In such populations, low maternal cobalamin status is associated with adverse pregnancy outcomes (preterm birth, intrauterine growth retardation, early recurrent miscarriage), neural tube defects, reduced neurocognitive performance in children, accelerated bone turnover, and low bone mineral density with fractures. Insufficient cobalamin intake is also seen in breast-fed infants of mothers with pernicious anaemia.

Inclusions

  • cobalamin deficiency
  • cyanocobalamin deficiency

Also indexed as

Encephalopathy due to vitamin B12 deficiencyMyelopathy due to vitamin B12 deficiencyOptic neuropathy due to vitamin B12 deficiencyPeripheral neuropathy due to cobalamin deficiencyPeripheral neuropathy due to vitamin B12 deficiencyVitamin B12 deficiencycobalamin deficiencycyanocobalamin deficiencydeficiency of vitamin b12myelopathy due to cobalamin deficiency

Nearby in Undernutrition