Iron Deficiency (Even Without Anemia)
→ Signs: Spoon-shaped nails (koilonychia), extreme brittleness, pale nail beds.
→ Science: Iron fuels oxygen delivery to the nail matrix. Subclinical deficiency impairs cell turnover long before hemoglobin drops.
✅ Prioritize: Pair plant-based iron (lentils, spinach) with vitamin C (bell peppers, citrus) for absorption. Limit tea/coffee with meals—they inhibit uptake.
Inadequate Protein
→ Signs: Slow growth, white spots (not zinc-related, as once thought—often minor trauma), weak nail plate.
✅ Prioritize: 20–30g protein per meal: Greek yogurt, salmon, lentils, chicken, or tofu. Collagen peptides (10g/day) may support nail strength—though whole proteins remain foundational.
2. Dehydration: The Invisible Stressor
Water isn’t just for skin glow—it maintains nail pliability. Dehydrated nails lose elasticity, becoming prone to micro-tears and peeling.
→ Try this: Track your water intake for 3 days. If you’re under 1.5–2L/day (adjust for climate/activity), add one glass hourly. Notice changes in 2–3 weeks.
3. Environmental Assaults (You Can Control)
