Noun
a chronic progressive anemia of older adults; thought to result from a lack of intrinsic factor (a substance secreted by the stomach that is responsible for the absorption of vitamin B12)
Source: WordNetIf you’re dealing with pernicious anemia, SIBO, or low stomach acid, you’re going to have problems digesting capsules or tablets of B12. Source: Internet
In pernicious anemia, the immune system attacks the protein necessary for absorbing vitamin B12 in the gut. Since vitamin B12 plays an important role in making red blood cells, a deficiency leads to anemia. Source: Internet
Yes, I still have the hypothyroidism but adding B-12 (I have to have injections since I have pernicious anemia) has helped in many ways, from emotions to giving me energy. Source: Internet