Your nails are far more than a canvas for polish—they are a visible reflection of your internal health. When they become brittle, ridged, or prone to peeling, they often signal underlying nutritional gaps, particularly as we age. The encouraging truth is that with intentional dietary adjustments and targeted nutrients, you can cultivate stronger, smoother nails from the inside out.
Science points to six essential components that form the foundation of resilient nail health.
The Six Key Nutrients for Stronger Nails
1. Protein: The Structural Foundation
Nails are primarily composed of keratin, a fibrous structural protein. Inadequate protein intake directly compromises nail thickness and strength.
Recommended Intake: 0.8–1.0 grams per kilogram of body weight (approximately 55–70 grams daily for a 150-pound adult).
Top Sources: Eggs, lean poultry, fish, Greek yogurt, and plant-based options like lentils, tofu, and quinoa.
2. Biotin (Vitamin B7): Strength and Growth Support
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