First, Aging
Vertical lines on the nails usually become more apparent with age. Not many people find these lines, which run the length of the nail, to be an issue.
2. Missing nutritional intake.
Vertical lines appearing on the nails are one symptom of vitamin deficiencies that may affect nail health. You can’t have healthy nails without these essential nutrients:
Keratin, a protein, is the main component of nails. Inadequate protein intake might hinder the body’s ability to produce robust and healthy nails.
