Why do nails turn yellow?

#nails #turn #yellow

Nails are often a “business card” of our well-being. We tend to look at the yellowish coloring as a simple aesthetic inconvenience. But as a dermatologist, I know that this change can be a silent messenger of internal processes or external habits that require correction.

What does yellowing of nails actually mean?

Normally, the nail plate is translucent, leaving the rosy shade of the vascularized nail bed to be observed. When yellow pigmentation appears, it is important to distinguish between:
• External causes – the pigment is deposited on the surface or in the superficial layers of the keratin, under the influence of factors that act directly on the nail.
• Internal causes – the change occurs “from within” and may reflect a slowdown in nail growth, poor circulation or nutritional imbalances.

Common external causes of yellow nails

1. Dyes from nail polishes and gels
The most frequent external cause is the prolonged use of nail varnishes, especially dark colors (red, orange), without applying a protective base. Pigments can penetrate keratin and stain it.
2. Smoking
Nicotine and tar can deposit on the surface of the nails, giving them a matte and yellowish appearance.

3. Exposure to chemicals
Detergents, cleaning products or solvents can degrade the protective layer of the nail, favoring its yellowing and fragility.
4. Onychomycosis (fungal nail infection – nail fungus)
This often begins with the yellowing and thickening of the nail and requires a dermatological evaluation.

Internal causes: when the nails signal imbalances

If the nail grows already yellow from the base (matrix), the cause is, most likely, systemic. In addition to rarer conditions (such as yellow nail syndrome, associated with lymphatic or pulmonary disorders), the most common causes are:
1. Nutritional deficiencies
The lack of certain vitamins or minerals can affect the formation of keratin and can influence the color and strength of the nails.
2. Metabolic imbalances
Thyroid conditions or diabetes can be associated with changes in nail color.

3. Systemic diseases
Sometimes, yellowed nails can accompany other clinical manifestations of liver or respiratory diseases.
Within nutritional deficits, the deficiency of Vitamin E and vitamins from the B Complex can play an important role. When the body does not have these vitamins, the nail becomes more vulnerable to oxidative stress, grows more slowly and can take on a dull, yellowish and brittle appearance.

The role of vitamin e in nail health

Vitamin E is a fat-soluble antioxidant that contributes to maintaining the integrity of the cell membrane and keeping the tissues hydrated. Thus, it supports the elasticity and resistance of the nails. The deficiency of this vitamin can favor excessive dryness and the appearance of a matte or yellowish color.

For patients with brittle and yellowed nails, vitamin E supplementation can be considered when clinical evaluation or laboratory tests suggest a deficiency. For example, Vitamin E from Calivita it offers an easy-to-administer form and can contribute to maintaining the hydration of the nail blade and protecting keratin against oxidative stress, as part of a balanced nutritional strategy.

B vitamin complex and nail regeneration

b complex vitamins it influences cellular metabolism, protein synthesis and the health of the skin and skin appendages, including nails.
Biotin (vitamin B7) has an essential role in the formation of keratin, and other vitamins from the B complex, such as pantothenic acid (B5) and cobalamin (B12), support the metabolism of amino acids necessary for nail regeneration and growth.
Although B vitamin deficiencies rarely cause yellowing of the nails by themselves, they can contribute to brittleness, slow growth and uneven appearance when there are deficiencies.

A complex of B vitamins can be useful in nutritional strategies when deficiencies are identified. A suitable option includes:
• B Complex from Calivita – the variant intended for the daily support of the vitamin b group requirement.
• Mega B Complex from Calivita – the formula with higher concentrations and prolonged release, intended for people who require an increased intake of B vitamins.

Nutritional supplements can support metabolic functions and cellular health, including nail structure, when recommended by a doctor following a clinical evaluation. They do not replace a balanced diet and do not substitute medical treatments when they are necessary.

Other measures that help restore nails

Restoring yellowed nails requires patience, because the fingernail is completely renewed in about 6 months. In addition to the nutritional approach, the following measures can be useful:
• Balanced diet – adequate intake of proteins, essential fatty acids, iron, zinc, vitamins A, C, E and the B complex.
• Proper hydration – both internal and external, because dehydrated nails stain and crack more easily.
• Breaks between manicures – avoiding frequent exposure to acetone and UV gels reduces brittleness and artificial yellowing.
• Natural nail oils – regular application of cuticle oil or vitamin E oil can protect and hydrate the nail plate.
• Medical evaluation – if the nails remain yellowed, thick or painful despite proper care, a dermatological evaluation is recommended to rule out onychomycosis or other conditions.

Conclusion – nails reflect general health

Nails are a real window to the general health of the body. Although their changes may seem only an aesthetic problem, they may signal internal imbalances or the effects of harmful external factors.

The correct approach involves identifying the cause and treating it, not just masking the visible symptom.

Maintaining nail health involves a combination of balanced nutrition, proper care and, when necessary, medical evaluation and personalized interventions.

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