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.
