Iron deficiency can cause several symptoms, including fatigue, headaches, and brittle nails. Spotting these signs early on ...

Nail syndromes. Witkop syndrome is a hereditary genetic disease that leads to missing teeth, vertical ridging in fingernails, and toenail koilonychia, which causes indented nails called spoon nails.

For example, a telltale sign of iron-deficiency anemia is when your nails are ridged or you have spoon-shaped nails (koilonychia) that curve up at the sides. Iron supplementation with over-the ...

People experience nutrient deficiencies when they don’t consume enough nutrients from food or when their body has trouble absorbing nutrients. This can lead to symptoms like fatigue, appetite changes, ...