A tiny change in your nails can trigger a very big fear.

After 40, those thin vertical ridges often become more noticeable, and while most are harmless, certain accompanying changes deserve attention.

Before you dismiss them as aging or imagine the worst, learn which signs matter most and when a closer look could reveal something worth asking your doc…

Vertical nail ridges run from the cuticle to the tip and commonly become more prominent with age. Changes in nail growth and increasing dryness can make these lines stand out, especially with frequent handwashing or exposure to cleaning products.

On their own, longstanding ridges usually aren’t a warning of serious illness. Nutritional deficiencies and some medical conditions can affect nails, but ridges alone cannot establish a diagnosis or show that you need supplements.

Simple care can help: moisturize nails and cuticles, wear gloves when cleaning, and avoid aggressive buffing or harsh manicures. Eat a balanced diet rather than starting supplements without advice.

Arrange a medical assessment for sudden changes, persistent splitting, pain, swelling, or changes accompanied by fatigue or other symptoms. A new or widening dark streak, particularly in one nail, deserves prompt evaluation.

The reassuring takeaway is that ordinary ridges are common; what matters is noticing meaningful changes.