Which of the following is NOT a sign of a healthy nail?

A healthy nail is characterized by several key features. Consistent color indicates a well-nourished nail without discoloration or spotting, which can signify health issues. A smooth surface reflects proper hydration and care, while a strong structure suggests the nail is resilient and less prone to breakage.

The presence of ridges, on the other hand, is not a sign of a healthy nail. Ridges can indicate various underlying health issues, age-related changes, or nutritional deficiencies. Therefore, when assessing nail health, a smooth surface and consistent color are desirable, while ridges are generally seen as a negative indicator.