Afraid so! My alcohol dependency caused PA.
PA is caused by a deficiency of Intrinsic Factor (IF). IF is a required factor in Vitamin B12 absorption through the gastrointestinal tract. IF deficiency is diagnosed by Schilling's test, as well as...
I found this link helpful: http://www.westonaprice.org/basicnutrition/vitaminb12.html
Pernicious Anemia is caused by a lack of intrinsic factor (usually). There can be other causes, such as infection, surgery, medicines taken, or diet.
Lack of iron Heavy periods (in women) Eating disorder Pregnancy Leukaemia Cancer
Iron deficiency