2. Pale skin:
Hemoglobin in our red blood cells is what gives our skin that healthy, rosy color. Due to the lack of iron, the human body cannot produce enough hemoglobin for the red blood cells to contribute to the rest of the body, which results in pale skin. No matter your skin tone, if the inside of the: lips, gums, fingernails, and the inside of the bottom eyelids are less red than usual, low iron may be to blame.