I went in for my physical last week - still waiting for some tests results. However others came in & I was called late yesterday afternoon told that I had a significant vitamin B12 deficiency. Doctor thinks it may be pernicious anemia. There will be further tests to determine why my body isn't absorbing this vitamin. This may explain the crushing fatigue & numbness in my face & hands. I got so tired of hearing how stressful my life was - though from a quick google, stress might be better.