What causes Autoimmune atrophic gastritis ?
What causes autoimmune atrophic gastritis? Autoimmune atrophic gastritis is considered an autoimmune disorder. In people who are affected by this condition, the immune system mistakenly attacks the healthy cells of the stomach lining. Overtime, this can wear away the stomach's protective barrier and interfere with the absorption of several key vitamins (i.e. vitamin B12, iron, folate). This leads to the signs and symptoms of autoimmune atrophic gastritis.