3. Pale skin
The hemoglobin in red blood cells gives the blood its red color, so low levels of iron deficiency cause your blood to turn less red. This is why if you have an iron deficiency, your skin may lose its healthy, rosy color.
This paleness can appear all over the body, pale skin and pale coloring of the inside of the lower eyelids is another common sign of iron deficiency. Or you can limit it to one area, such as your lips, gums, or nails, and the inside of your lower eyelids will be red than usual. This is the first thing doctors expect as a sign of iron deficiency. Paleness is more common in moderate or severe cases of anemia. If you pull your lower eyelid down, the inner layer should be bright red. If it is a very pale pink or yellow color, this indicates that you have an iron deficiency.
