Dryness can make these ridges stand out even more. Frequent handwashing, cold weather, cleaning chemicals, and reduced natural moisture can leave aging nails more brittle, rough, or prone to splitting.
In some cases, pronounced nail changes may occur alongside nutritional deficiencies, anemia, thyroid problems, or certain skin conditions. However, vertical ridges alone are not enough to diagnose any illness.
Keeping nails moisturized, eating a balanced diet, and protecting hands from harsh chemicals may help maintain healthier nails. See a healthcare professional if nail changes appear suddenly or include dark streaks, pain, swelling, major discoloration, or unusual thickening.