What is the most likely cause of brittle nails?

• A. Excessive nail polishing
• B. Frequent exposure to moisture
• C. Deficiency in essential nutrients
• D. Direct exposure to sunlight

Answer: (C)

Brittle nails are often a result of a deficiency in essential nutrients, which is why this option is the most likely cause. Nutrients such as biotin, zinc, and protein are crucial for maintaining the strength and integrity of nails. A lack of these nutrients can lead to nails that are weak, susceptible to splitting and breaking, and overall unhealthy in appearance.

Moreover, while factors like excessive nail polishing, frequent exposure to moisture, and direct exposure to sunlight can contribute to nail health, they are not as directly linked to the fundamental structural weakness that leads to brittleness. For example, while excessive nail polishing can weaken nails temporarily, the long-term strength of nails largely depends on the nutritional intake. Similarly, frequent exposure to moisture may lead to soft and pliable nails but does not specifically imply brittleness, which is more a characteristic of nutrient deficiency. Lastly, direct exposure to sunlight can affect skin and nail health in some way, but it does not primarily cause nails to become brittle.

Understanding the role of nutrition highlights the importance of a balanced diet for maintaining strong nails, as opposed to other temporary environmental factors.