HASHIMOTO'S THYROIDITIS What is Hashimoto's thyroiditis? Hashimoto's thyroiditis is an autoimmune condition in which the immune system attacks the thyroid gland. Over time, this can damage the thyroid and Today is my vitamin B12 injection day. If you have Hashimotos disease (like me), it's really important to keep your vitamin B12 at optimal. Optimal is not just over the threshold, its Hashimoto's and Fatigue: 3 Tips to Deal with Pernicious Anemia Vitamin B12 & Hypothyroidism: What You Must Know Our bodies need vitamin B12 to maintain healthy red blood cells, nerves, and brain function. If a person has vitamin B12 deficiency (their body does not have enough vitamin B12), they can