Silent Signals: Are You Tired, or Is It Iron Deficiency?

Changes in Hair, Nails, and Tongue
Iron is essential for the health of the body's epithelial tissues. A deficiency can cause hair loss, brittle nails, or spoon-shaped nails (koilonychia). Additionally, the tongue may appear swollen, inflamed, or unnaturally smooth, and cracks may develop at the corners of the mouth, making eating and drinking difficult.