Nails

Definition

Nails are keratin-based structures located at the end of fingers and toes, providing protection and support for these extremities. They reflect several health conditions and nutritional statuses.

5 Must Know Facts For Your Next Test

1. Nail health can be an indicator of overall nutritional status, especially deficiencies in vitamins such as biotin, iron, and zinc.
2. A lack of essential fatty acids can lead to brittle nails.
3. Protein deficiency can cause nail abnormalities like Beau's lines or spoon-shaped nails (koilonychia).
4. Clubbing of the nails can indicate chronic pulmonary disease or other systemic illnesses.
5. Healthy nail growth requires adequate intake of protein, vitamins A, C, D, E, and minerals such as iron and magnesium.

Review Questions

• What are common nail changes associated with nutritional deficiencies?
• How does protein intake affect nail health?
• What can clubbing of the nails indicate about a person's pulmonary health?

Related terms

Keratin:

A type of protein that makes up hair, skin, and nails.

Biotin:

A B-vitamin important for healthy skin, hair, eyes, liver, and nervous system function.

Koilonychia: Spoon-shaped nails often caused by iron deficiency anemia.