3. Iron: Preventing Weak or Grooved Nails

Iron deficiency can lead to thin nails and, in more severe cases, spoon-shaped nails (koilonychia). While vertical ridges alone don’t automatically mean iron deficiency, persistent weakness or fatigue alongside nail changes may be worth discussing with a healthcare provider.

Iron-rich foods include:

• Lean red meat
• Chicken thighs
• Lentils
• Chickpeas
• Pumpkin seeds
• Dark leafy greens
• Pair plant-based iron sources with vitamin C–rich foods like citrus fruits or bell peppers to improve absorption.

4. Zinc: Supporting Growth and Repair

Zinc plays an essential role in cell growth and repair. A deficiency may contribute to nail abnormalities, including ridges or white spots.

Include foods such as:

• Oysters
• Beef
• Cashews
• Sunflower seeds
• Whole grains

Because the body does not store zinc efficiently, consistent intake is important.

5. Omega-3 Fatty Acids: Improving Moisture and Flexibility