INTEGRITY RESEARCH BPC 157 TB 500 30 capsules per bottle Ironhouse Gym I feel like I've blown up my life all because I'm low on some vitamins? : r B12_Deficiency B12 deficiency can damage your nervous system with a completely normal blood count. In a landmark NEJM study, 28% of patients with neuropsychiatric B12 damage had no anemia or macrocytosis. B12 runs Vitamin B12 helps make healthy red blood cells and keeps the nerves working properly. When B12 becomes low, it can cause anemia symptoms as well as nerve and brain related symptoms.