Hello, my first auto immune disease was Hashimoto’s. Actually it was asthma and allergies as a baby. I now have gastritis, Gerd, type one diabetes, lichen planus, vitiligo, psoriasis and pernicious anemia. I am feeling like the poster child for auto immune diseases. I’m in my mid-50s. I would really like to know what the optimum levels of B12 should be for someone with pernicious anemia? I take B12 shots randomly but would really like to know how to manage this effectively. I have talk to my GP about it but it doesn’t seem like she’s very knowledgeable is there another specialist I could see?