Alternative Names
Intrinsic factor - lack of
Definition of Lack of intrinsic factor:
Intrinsic factor is a natural substance normally present in the stomach. It is essential to the digestion of vitamin B-12. Lack of intrinsic factor leads to pernicious anemia and vitamin B-12 deficiency.
Babies that are born without intrinsic factor cannot properly absorb vitamin B-12 starting around 6 months of age. The juvenile type of lack of intrinsic factor tends to manifest itself after the age of ten.
