doi:10.1002/14651858.CD004655.pub3
Vitamin B12 deficiency in over 16s: diagnosis and management (NG239)
You have higher levels of the chemicals homocysteine and methylmalonic acid and reduced DNA synthesis, leading to neurological and psychological symptoms, such as confusion, mood swings, problems walking or talking, and irritability
pylori infections are fairly common, and most dont result in autoimmune gastritis.[ref][ref] Autoimmune gastritis and pernicious anemia often coincide with other autoimmune diseases, including vitiligo, oral lichen planus, Addisons disease, and type 1 diabetes.[ref] How is pernicious anemia diagnosed
But usually, a series of treatments provide the most noticeable benefits
Evaluating NAD and NAD precursors for health and longevity