5. Brittle, Cracked, or Peeling Nails
Dry, fragile nails are often caused by frequent handwashing or chemical exposure. But persistent brittleness can sometimes be linked to thyroid disorders or vitamin deficiencies, particularly iron or biotin deficiency.
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If your nails break easily despite moisturizing and proper care, a medical check-up may help uncover the cause.
6. Spoon-Shaped Nails
Nails that curve upward at the edges, forming a spoon-like shape (a condition called koilonychia), may be associated with iron deficiency anemia. If you notice this unusual shape along with fatigue or weakness, consider having your iron levels tested.
