A Nutrition Guide for Healthier Nails: What Your Nails May Be Trying to Tell You
Healthy nails often begin with proper nutrition, not expensive treatments.
Many people focus on skincare and hair care while overlooking the health of their nails. However, nails can provide valuable clues about your overall nutritional status. Brittle, peeling, ridged, or slow-growing nails are not always caused by frequent manicures or aging. In some cases, they may indicate that your body is lacking essential nutrients needed to build strong, healthy nail tissue.
While nail problems can also result from medical conditions, repeated exposure to water or chemicals, or physical injury, nutrition plays a key role in maintaining healthy nail growth. Understanding what nails are made of and which nutrients support them is the first step toward healthier hands.
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What Are Nails Made Of?
Nails are primarily composed of keratin, a tough structural protein that also forms hair and the outer layer of skin. Keratin provides nails with their strength and durability.
Although nails appear hard, they also contain water and small amounts of natural oils that help keep them flexible. Minerals such as calcium, zinc, iron, and sulfur also contribute to healthy nail formation.
When the body lacks the nutrients needed to produce keratin and maintain nail structure, the nails may become weak, brittle, or prone to splitting.
Top Nutrients for Healthy Nails
1. Biotin (Vitamin B7)
Biotin is one of the nutrients most commonly associated with nail health. It plays an important role in keratin production and may help improve nail strength in people with brittle nails.
Good food sources include:
- Eggs
- Salmon
- Almonds
- Walnuts
- Sweet potatoes
- Sunflower seeds
2. Protein
Since nails are made primarily of keratin, consuming enough protein is essential.
Excellent protein sources include lean meat, poultry, fish, eggs, dairy products, beans, lentils, and tofu.
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3. Iron
Iron helps transport oxygen throughout the body, including to the nail matrix where new nail cells are formed.
Iron deficiency may contribute to brittle nails or spoon-shaped nails in some individuals.
Foods rich in iron include lean red meat, spinach, beans, lentils, fortified cereals, and shellfish.
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