In a healthy toenail, your nail plate—the hardened, translucent shell on top of your nail bed (the tissue at the ... including iron deficiency anemia (not having enough iron in your blood ...

Conducting self-exams to catch early signs ... nail bed, you may be developing "spoon nails," or koilonychia. "Spoon-shaped nails that curve inwards can be a sign of iron-deficiency anemia ...