[20] Pernicious anemia [edit] Pernicious anemia is a disease caused by an autoimmune response that produces antibodies that attack the parietal cells in the stomach lining, preventing them from creating intrinsic factor needed for the absorption of vitamin B 12
Symptoms of vitamin B12 deficiency can vary widely and may include fatigue, weakness, pale skin, shortness of breath, neurological symptoms such as numbness or tingling in the hands and feet, difficulty walking, memory loss, and mood changes
Additionally, conditions such as pernicious anemia, gastrointestinal disorders, or even aging can impair B12 absorption
It has been studied in research settings for its role in tissue repair processes involving muscles, tendons, ligaments, and skin.Research has also explored its interaction with protective mechanisms in organ systems and its involvement in maintaining digestive tract integrity
This prevents pituitary downregulation and maintains long-term responsiveness
Energy and subjective improvement Many people notice improved energy and mood within days to a few weeks after a B12 injection if they were deficient
