The 4 stages of B12 deficiency include (31): Stage 1: decreased levels of vitamin B12 in your blood Stage 2: low levels of vitamin B12 in your cells along with metabolic abnormalities Stage 3: neurological and psychological symptoms like anxiety, confusion, problems with balance, and others Stage 4: macrocytic anemia very large red blood cells (32) B12 deficiency can cause a variety of symptoms, including fatigue, headaches, depression, pale or yellow skin, mental impairment, and pain and inflammation in the mouth and tongue
doi: 10.1177/03946320241304911 126 ChaudharyPJanmedaPDoceaAOYeskaliyevaBAbdull RazisAFModuBet al
Taking a Whole-Body Approach to Your Health Supplements like NAC can be useful, but they should be part of a broader health approach
Chung YC, Shin WH, Baek JY, Cho EJ, Baik HH, Kim SR, et al
So, there seems a possibility it is autoimmune BUT what about the low meat intake