Liam Carter
The colour of your fingernails can indicate certain health conditions. Healthy fingernails should be pink with a white nail bed. However, nails can also be black, blue, brown, green, grey, yellow, pale, purple or red, and each colour can mean something different. For example, white nails could be a sign of kidney or liver disorders, or even poisoning. Yellow nails are often a sign of a fungal infection.
| Characteristics | Values |
|---|---|
| Healthy nail colour | Pink with a white nail bed |
| Black nails | Infection, poor circulation, or other health problems |
| Blue nails | Lack of oxygen, possibly a lung problem |
| Brown/copper nails | Various reasons, including mechanical or environmental influences |
| Green nails | Bacterial or fungal infection, severe emphysema, or allergic reaction to cleaning agents |
| Grey nails | Various reasons, including mechanical or environmental influences |
| Pale nails | Various reasons, including mechanical or environmental influences |
| White nails | Kidney or liver disorders, or anemia |
| Yellow nails | Fungal infection, thyroid disease, lung disease, diabetes, or psoriasis |
| Red nails | Heart disease, brain haemorrhage, high blood pressure, lung disease, stroke, or carbon monoxide poisoning |
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What You'll Learn
White nails
Healthy fingernails and toenails should generally be pink, with the nail plate being pink and the nail being white as it grows off the nail bed. Any significant deviation from this pinkish hue can indicate an underlying health issue. While nail colour changes are rarely the first clues of serious illness, it is important to be aware of potential health problems that may be reflected in nail colour.
It is worth noting that your nails may look a certain way for reasons unrelated to your health, such as mechanical or environmental influences. Therefore, if you notice any changes in your nail colour, it is always a good idea to consult a healthcare professional for proper diagnosis and treatment.
If you are concerned about the appearance of your nails, it is recommended that you seek medical advice, as they can provide a more accurate assessment and determine if any further investigation or treatment is necessary.
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Yellow nails
Healthy fingernails and toenails should generally be pink, with the healthy nail plate being pink and the nail being white as it grows off the nail bed. Any significant deviation from the normal pinkish hue of nails can indicate an underlying health issue.
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Green nails
In most instances, other signs or symptoms of disease will manifest before nail changes become evident. However, it is always a good idea to pay attention to any changes in your body, including your nail colour, as this can provide valuable insights into your overall health.
It is also important to remember that your nails may look a certain way for reasons unrelated to your health. Mechanical or environmental influences can also affect nail colour. Therefore, if you notice that your nails are green, it is important to consider your recent activities and exposure to potential toxins or other factors that could impact your nail health.
If you have any concerns about the colour of your nails, it is always best to consult with a healthcare professional. They can help determine if the colour change is due to a health issue or another factor and provide guidance on any necessary treatment or lifestyle changes.
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Blue nails
If you notice that your nails have turned blue, it is important to monitor your overall health and consult a doctor if you have any concerns. While blue nails can be a sign of an underlying health issue, it is not always the case, and other factors such as mechanical or environmental influences can also cause nail discolouration.
In addition to blue nails, other nail colours such as yellow, green, black, or brown/copper can also indicate potential health problems. Therefore, it is always advisable to pay attention to any significant deviations from the normal pinkish hue of healthy nails and seek medical advice if necessary.
While nail colour can provide some insight into potential health issues, it is important to remember that nail changes are rarely the first clues of serious illness. Other signs and symptoms usually manifest before nail changes become evident. Nonetheless, monitoring your nail health and overall health can help identify potential issues early on.
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Black nails
Nail colour can be an indicator of overall health. For example, white nails, also known as leukonychia, can be the result of trauma, anemia, 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 are often a sign of a fungal infection, which can cause the nail bed to retract and the nails to thicken and crumble.
In most cases, patients will manifest other signs or symptoms of disease before nail changes become evident. Therefore, if you are concerned about the colour of your nails, it is important to consult a medical professional for a proper diagnosis.
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Frequently asked questions
Healthy nails should be white as they grow off the nail bed, with the nail plate being pink.
Yellow nails can be a sign of a fungal infection. In rare cases, they can indicate a more serious condition such as severe thyroid disease, lung disease, diabetes or psoriasis.
Nails with a bluish tint can mean the body isn't getting enough oxygen. This could indicate a lung problem, such as emphysema.
Nails that are mostly white with darker rims can indicate liver problems, such as hepatitis.
Green nails can indicate a bacterial infection (due to the Bacillus bacterium), a localised fungal infection, severe emphysema or even allergic side effects to certain cleaning agents.
