What factor can contribute to brittle nails?

Excess water exposure can indeed contribute to brittle nails. When nails are frequently exposed to water, especially in environments where they are submerged or saturated for prolonged periods, they can become weak and prone to breaking. This moisture causes the nail structure to swell, and when the nails dry out, they can lose their flexibility and strength, which leads to brittleness. This is especially true for individuals who frequently wash their hands or use water in their occupations, as the constant cycle of wetting and drying can lead to damage over time.

Other factors, such as high humidity levels, regular moisturizing, and proper nutrition, generally do not lead to brittleness. In fact, proper nutrition contributes positively to nail health, while regular moisturizing helps to keep nails hydrated and less prone to becoming brittle. High humidity levels usually provide a more favorable environment for nails compared to dry conditions. Thus, understanding the effects of excess water exposure is crucial for maintaining healthy nails.