
Strong, healthy nails are not just good news for your manicure. The eyes might be the windows to the soul, but to a doctor, nails can be the windows to your health. Physicians can use them to diagnose all sorts of conditions, from dermatological problems to kidney disease or even autoimmune disorders. Healthy nails are smooth, without ridges, grooves, spots or discolouration. But what do changes in nail colour and growth patterns mean? Can white nails, or leukonychia, indicate dietary deficiencies or heart disease? And what about yellow nails? Are they a sign of ageing, or something more serious?
| Characteristics | Values |
|---|---|
| Yellow nails | Ageing, smoking, nail lacquers, acrylic nails, yellow nail syndrome |
| White nails | Trauma, anemia, dietary deficiencies, heart or kidney disease, poisoning, liver problems |
| Nail beds | Softening can indicate clubbing, which is a sign of health issues |
| Ridges | Vertical ridges are harmless |
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What You'll Learn

Yellow nails
Strong, healthy nails are not just good news for your manicure. Unpleasant nail symptoms could indicate bigger health concerns. For example, yellow nails can be a result of ageing, nail lacquers or acrylic nails, smoking, or a rare disorder called yellow nail syndrome.
Yellow nail syndrome is a rare disorder that causes thick yellow nails. It usually occurs with respiratory issues and limb swelling.
While the eyes might be the windows to the soul, to a doctor, the nails can be the windows to your health. Physicians can use them to diagnose all sorts of conditions, from dermatological problems to kidney disease or even autoimmune disorders.
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Clubbing
Strong, healthy nails are not just good news for your manicure. They can also indicate your overall health. While some nail changes are natural, others can signal health concerns, especially changes in nail colour and growth patterns. For instance, yellow nails can be caused by smoking, or by a rare disorder called yellow nail syndrome, which is usually associated with respiratory issues and limb swelling.
One of the first things doctors learn to look for is clubbing, where there is a loss of the angle between the nail and the nail bed. With clubbing, the nail beds soften, and the nails seem to 'float' instead of being firmly attached to the finger.
Nails are made from keratin, a tough protein that shields the toes and tops of the fingers from trauma. Healthy nails are smooth, without ridges, grooves, spots or discolouration. However, nails can develop harmless conditions, such as vertical ridges that run from the cuticle to the tip of the nail.
White nails, also known as leukonychia, can be caused by trauma, anaemia, dietary deficiencies, heart or kidney disease, or even poisoning. If the nails are mostly white with darker rims, this can indicate liver problems, such as hepatitis.
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White flecks
Strong, healthy nails are not just good news for your manicure. Unpleasant nail symptoms could also indicate bigger health concerns. Nails are an extension of the skin and are made from keratin, a super tough protein that shields the toes and tops of your fingers from trauma.
While the eyes might be the windows to the soul, to a doctor, the nails can be the windows to your health. Physicians can use them to diagnose all sorts of conditions, from dermatological problems to kidney disease or even autoimmune disorders. For example, one of the first things doctors look for is clubbing, where there is a loss of the angle between the nail and the nail bed itself. With clubbing, the nail beds soften, and the nails almost seem to "float" instead of being firmly attached to the finger.
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Ridges, grooves, spots or discolouration
Vertical ridges that run from the cuticle to the tip of the nail are harmless and can develop naturally. However, other changes in nail colour and growth patterns may signal health concerns. For example, white nails, known as leukonychia, can be caused by trauma, anaemia, dietary deficiencies, heart or kidney disease, or even poisoning. If the nails are mostly white with darker rims, this can indicate liver problems such as hepatitis. Nails that are thick and yellow in colour may be a symptom of yellow nail syndrome, a rare disorder that is associated with respiratory issues and limb swelling.
Yellow nails can also be caused by smoking, which can stain nails and give them a yellowish hue. Additionally, the appearance of white flecks, also known as leukonychia, is sometimes associated with calcium deficiency. While this is a pervasive idea, it is unclear whether there is any truth to it.
One condition that doctors look out for is called clubbing, where there is a loss of the angle between the nail and the nail bed. With clubbing, the nail beds soften, and the nails seem to "float" instead of being firmly attached to the finger. This can be a sign of various conditions, from dermatological problems to kidney disease or autoimmune disorders.
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Changes in nail colour and growth patterns
While strong, healthy nails are good news for your manicure, unpleasant nail symptoms could indicate bigger health concerns. Nails are made from keratin, a super-tough protein that shields the toes and tops of your fingers from trauma.
Healthy nails are smooth, without ridges, grooves, spots or discolouration. However, nails can develop harmless conditions, such as vertical ridges that run from the cuticle to the tip of the nail.
Nail colour can be indicative of health problems. White nails, also known as leukonychia, can be the result of trauma, anaemia, dietary deficiencies, heart or kidney disease, or even poisoning. If the nails are mostly white with darker rims, this can indicate liver problems, such as hepatitis. Yellow nails can be caused by smoking, nail lacquers or acrylic nails, or a rare disorder called yellow nail syndrome, which is usually accompanied by respiratory issues and limb swelling.
Nail growth patterns can also be indicative of health problems. One such example is clubbing, where there is a loss of the angle between the nail and the nail bed itself. With clubbing, the nail beds soften, and the nails almost seem to "float" instead of being firmly attached to the finger.
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Frequently asked questions
Yes, strong, healthy nails are smooth, without ridges, grooves, spots or discolouration.
White nails, also known as leukonychia, could be the result of trauma, anemia, dietary deficiencies, heart or kidney disease, or even poisoning.
Yellow nails can be caused by smoking, nail lacquers or acrylic nails, or a rare disorder called yellow nail syndrome, which is usually accompanied by respiratory issues and limb swelling.
Clubbing is when there is a loss of the angle between the nail and the nail bed. The nail beds soften, and the nails seem to "float" instead of being firmly attached to the finger.










































