🔍 What Those Vertical Lines on Your Nails Really Reveal

Most Common Causes:

📊 Up to 90% of people over 50 have some degree of nail ridging  it’s a normal part of aging.

🟢 When Vertical Lines Are Normal

You likely don’t need to worry if:

• Ridges are on most nails
• Nails are pink, smooth at the base, and pain-free
• Changes are gradual
• You’re over 40 (natural aging process)

✅ Think of them like wrinkles for your nails  a sign of time, not trouble.

🟡 When to Pay Attention: Possible Health Clues

While vertical ridges are usually harmless, sometimes they can be linked to underlying conditions  especially if paired with other changes.

1. Nutrient Deficiencies

• Iron deficiency (anemia)   may cause brittle nails or spoon-shaped nails (koilonychia), not ridges
• Biotin or vitamin B12 deficiency   can lead to weak, splitting nails

✅ Ridges alone are not a reliable sign of deficiency.

2. Psoriasis or Eczema

• Skin conditions that can affect the nail matrix
• May cause:
  • Pitting (small dents)
  • Thickening
  • Yellowish discoloration
  • Onycholysis (nail lifting)

✅ Often affects fingernails and skin too.

3. Thyroid Disorders

• Both hypothyroidism and hyperthyroidism can affect nail growth
• May cause:
  • Brittle, splitting nails
  • Slow growth
  • Dry cuticles

✅ But ridges alone are not diagnostic.

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