What to Eat to Reduce Nail Ridges: A Nutrition Guide for Healthier Nails

 

Vertical Nail Ridges: What They Mean and How Nutrition Can Help

Vertical ridges on the nails are very common, especially as we age. In many cases, they are harmless and simply part of the natural aging process. However, when ridges become more noticeable, nails become brittle, or there are changes in nail texture or color, they may sometimes be linked to nutritional deficiencies.

The good news is that your diet can play an important role in supporting stronger, healthier nails.

1. Protein: The Foundation of Strong Nails

Nails are made mainly of keratin, a type of protein. When your diet does not provide enough protein, nails may become weak, thin, brittle, and more likely to split or develop visible ridges.

Good protein sources include:

• Eggs
• Lean poultry
• Fish
• Greek yogurt
• Beans and lentils
• Tofu

Try to include a source of protein at every meal. Adequate protein intake supports continuous keratin production and helps maintain nail strength.

2. Biotin (Vitamin B7): A Nail-Strengthening Nutrient

Biotin is one of the most recognized nutrients for nail health. Research suggests that biotin supplements may help improve brittle nails, although many people can get enough biotin through a balanced diet.

Foods rich in biotin include:

• Fully cooked eggs
• Almonds and walnuts
• Sweet potatoes
• Spinach
• Salmon

Biotin helps support keratin structure, which may make nails stronger, thicker, and less prone to ridging caused by weakness.

3. Iron: Helping Prevent Weak or Grooved Nails

Iron deficiency can contribute to thin, weak nails and, in more severe cases, may cause spoon-shaped nails (koilonychia).

Vertical ridges alone do not necessarily mean you have an iron deficiency. However, if nail changes occur along with symptoms such as fatigue, weakness, or low energy, it may be worth discussing with a healthcare professional.

Conclusion

For smoother, stronger nails:

• Eat enough protein to support keratin production.
• Include biotin-rich foods in your diet.
• Make sure you get enough iron, especially if you notice other symptoms of deficiency.