Our nails often reveal more about our health than we realize. While a smooth, clear nail surface is considered normal, lines or ridges that suddenly appear—especially after the age of 40—can sometimes signal underlying issues. Not every line is a cause for alarm, but knowing the possible reasons can help you catch early warning signs of health problems.
Types of Nail Lines and What They Mean
1. Vertical Ridges (From Cuticle to Tip)
Often harmless and linked to aging.
Nails lose natural oils and moisture over time, causing ridges to form.
Sometimes, they may indicate vitamin or mineral deficiencies, like lack of magnesium or iron.
2. Horizontal Lines (Beau’s Lines)
These can signal interruptions in nail growth due to illness, stress, or injury.
May be linked to diabetes, thyroid disorders, or circulatory problems.
If multiple nails are affected, it’s a good idea to consult a doctor.
3. Dark or Discolored Lines
