
Easy Guide to Nail Lines After 40: What Your Nails May Reveal About Your Health
Small white marks are very common.
Usually caused by:
- Minor nail injury
- Trauma to the nail bed
Despite popular belief, they’re not usually due to calcium deficiency.
5. Dark Lines (Important to Watch)
Dark streaks or lines running vertically can sometimes be harmless—but should always be checked.
In rare cases, they may be linked to Melanoma, especially if:
- The line is new
- It’s getting wider or darker
- It appears on only one nail
When in doubt, it’s best to consult a doctor.
6. Pale or White Nails
If nails appear unusually pale, it may be associated with:
- Low iron levels