3. Memory Problems or Brain Fog

If you find yourself forgetting things more often or struggling to concentrate, low vitamin B12 could be part of the problem. B12 helps support brain function, and deficiency has been associated with memory issues, difficulty focusing, and mental confusion.

4. Pale or Slightly Yellow Skin

Vitamin B12 deficiency can affect the production of red blood cells. When these cells break down abnormally, it can cause the skin to appear pale or slightly yellow. This happens because the breakdown releases a pigment called bilirubin, which can alter skin tone.

5. Shortness of Breath and Dizziness

Because B12 deficiency reduces healthy red blood cells, oxygen delivery to tissues becomes less efficient. This may cause dizziness, lightheadedness, or shortness of breath during normal activities such as climbing stairs or walking.