Your nails are more than just a canvas for polish—they’re windows into your overall health. Brittle, peeling, ridged, or slow-growing nails can often be traced back to nutritional gaps. While genetics and external factors (like frequent hand-washing or gel manicures) play a role, what you eat has a profound impact on nail strength, growth, and appearance.
Here’s a science-backed guide to the key nutrients your nails crave—and how to get them.
💅 Top 6 Nutrients for Strong, Healthy Nails
1. Biotin (Vitamin B7)
- Why it matters: Essential for keratin production—the protein that makes up nails, hair, and skin.
- Deficiency signs: Thin, splitting nails; hair loss.
- Daily need: 30 mcg (most adults get enough, but supplementation may help if deficient).
- Food sources: Eggs (yolk), almonds, sweet potatoes, salmon, avocado, nuts, seeds.
- Note: Studies show biotin supplements can improve nail thickness in people with brittle nails—but only if deficient.
2. Protein
- Why it matters: Nails are ~95% keratin, a structural protein. Without adequate protein, nails grow slowly and weaken.
- Daily need: 0.8g per kg of body weight (more if active).
- Food sources: Lean meats, fish, eggs, Greek yogurt, lentils, tofu, quinoa.
3. Iron
