Common Signs of Low Vitamin B12
6. A Sore or Smooth Tongue
Changes in the mouth can occur with B12 deficiency. The tongue may become sore, red, swollen, or unusually smooth, and some people develop mouth ulcers.
7. Changes in Memory or Concentration
Difficulty concentrating, forgetfulness, confusion, or changes in mood can sometimes occur with B12 deficiency, particularly when the deficiency is significant.
