My toenails are starting to curve downward and dig into the skin. Why does this happen with age?

Circulatory issues, common in older adults, can also impact nail health. Poor blood flow can lead to weaker nails that are more prone to curving. Diabetes, which affects circulation and nerve function, can similarly influence nail growth and increase the risk of infections and complications related to curved nails.

Fungal infections are a frequent cause of nail changes, particularly in older adults. These infections can cause the nail to thicken, discolor, and become misshapen, contributing to a downward curve.

Other nail diseases, such as psoriasis or lichen planus, can also alter nail shape and structure. These conditions cause changes in the nail matrix and can lead to increased curvature and discomfort.

Certain medications can affect nail growth and health. Chemotherapy drugs, for instance, are known to cause changes in nail texture and color, which can include increased curvature.