Sophia Delgado
Ridges in fingernails can be caused by a variety of factors, including vitamin and mineral deficiencies, chronic conditions, injury, or overexposure to moisture. While vertical ridges are generally not a cause for concern, horizontal ridges, also known as Beau's lines, may indicate an underlying health issue, such as kidney disease or vitamin deficiency. Vitamin deficiencies associated with nail ridges include zinc, calcium, B-complex vitamins, and selenium deficiencies. In addition to vitamin deficiencies, nail ridges can also be influenced by lifestyle factors, such as nail-biting, manicures, and the use of certain nail products. To maintain nail health, it is important to address any nutrient deficiencies, manage underlying health conditions, and protect nails from external damage.
| Characteristics | Values |
|---|---|
| Type of ridges | Vertical, horizontal |
| Appearance | Vertical ridges appear as lines running from the tip of the fingernail to the cuticle; horizontal ridges, also called Beau's lines, appear as lines across the nail |
| Causes | Vertical ridges are generally age-related and are not a cause for concern; horizontal ridges may be a sign of kidney disease or another underlying condition, such as nutritional deficiencies or illness |
| Treatment | Vertical ridges can be gently buffed to smooth them; treating or managing any underlying medical condition or nutrient deficiency causing horizontal ridges will allow smoother, healthier nails to grow in |
| Prevention | Keep nails and cuticles moisturized, avoid biting or picking at nails or cuticles, wear gloves when working with harsh products, take breaks from gel manicures and artificial nails, cut nails in traditional shapes |
| Related conditions | Spoon nails (associated with anemia or iron deficiency), nail clubbing (associated with heart and lung conditions, digestive or malabsorption conditions, certain cancers, and thyroid conditions) |
| Vitamins and minerals | Deficiencies in zinc, calcium, or B-complex vitamins may cause white lines or ridges; all-white or mostly white nails may be due to selenium deficiency |
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What You'll Learn
- White lines or streaks may indicate a deficiency in zinc, calcium or B-complex vitamins
- Dry and brittle nails can be a sign of vitamin deficiency
- Iron deficiency can cause spoon nails, where the nail appears concave
- Horizontal ridges, called Beau's lines, may indicate kidney disease or another underlying condition
- Vertical ridges are generally not a cause for concern, but can be caused by skin conditions like eczema or hypothyroidism
White lines or streaks may indicate a deficiency in zinc, calcium or B-complex vitamins
White lines or streaks on your nails can be harmless, but they could also indicate an underlying vitamin deficiency or a severe health condition. If you notice frequent or widespread white lines or streaks, it is advisable to consult a healthcare professional.
Zinc deficiency is a common cause of Beau's lines, which are horizontal ridges that develop when there is a disruption to the area where nail growth starts. Muehrcke's lines are similar to Beau's lines, but they appear as double white lines running horizontally across the nails. These lines are often associated with low protein levels in the blood and can also indicate health problems like liver disease or chronic stress.
Insufficient zinc can lead to nail dystrophy, characterised by nail discoloration, distortion, and increased brittleness. This makes the nails more prone to cracking and splitting. Ensuring adequate zinc intake through zinc-rich foods or supplements can help address nail dystrophy caused by zinc deficiency.
Calcium deficiency can also cause white lines or streaks on the nails, indicating an underlying issue. However, the direct relationship between calcium deficiency and nail health requires further exploration.
A deficiency in B-complex vitamins, particularly B12, can cause changes in nail colour. Vegans and vegetarians are at higher risk of B12 deficiency due to their dietary choices, but they can obtain it from fortified foods like breakfast cereals and nutritional yeast. Older adults and individuals with specific health conditions may also struggle to get enough B12.
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Dry and brittle nails can be a sign of vitamin deficiency
Dry and brittle nails can indicate a vitamin deficiency. Nails are part of the body's outer layer, or integumentary system, which also includes the skin, hair, and glands. As such, they can be a window to your overall health.
Vitamin and mineral deficiencies are not the only causes of nail changes. Sometimes, a health condition or lifestyle factors are to blame. For example, nail clubbing, where the tips of the fingers enlarge and the nails curve downward, can be caused by heart and lung conditions, digestive issues, certain cancers, or thyroid conditions.
However, if your nails are dry and brittle, it could be a sign that you're lacking in certain vitamins. White lines or ridges on your nails, for instance, may indicate deficiencies in zinc, calcium, or B-complex vitamins. All-white or mostly white nails could be a sign of selenium deficiency.
It's important to note that nail ridges can also be caused by external factors. Horizontal ridges, also called Beau's lines, may be a sign of kidney disease or another underlying condition. However, they can also be caused by trauma to the nail, such as nail-biting or a rough manicure. Vertical ridges, on the other hand, generally appear later in life and are not usually a cause for concern. They can be smoothed out with a nail buffer, but this should be done sparingly, as over-buffing can weaken the nails.
If you're concerned about the appearance of your nails, it's always best to consult a healthcare professional. They can help determine if your nail changes are related to a vitamin deficiency or another underlying cause.
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Iron deficiency can cause spoon nails, where the nail appears concave
Spoon nails, or koilonychia, are a nail abnormality that causes the nail to appear concave, either horizontally or vertically. This condition is often associated with iron deficiency, although it can also be caused by other factors such as malnutrition, chronic blood loss, or certain medical conditions.
Iron deficiency is a common cause of spoon nails, and it is believed that the condition results from reduced iron in iron-containing enzymes in epithelial cells or poor blood flow to the fingers and toes. People who follow a vegetarian diet or live at high altitudes may be at a higher risk of developing spoon nails due to potential iron deficiencies. Additionally, certain medical conditions, such as inflammatory skin diseases like psoriasis, hypo- or hyperthyroidism, autoimmune disorders, and lupus, can also contribute to the development of spoon nails.
The treatment for spoon nails typically involves addressing the underlying cause. If iron deficiency is the culprit, increasing iron intake through dietary changes or supplements can help correct and prevent spoon nails. Iron-rich foods include beans, lentils, dark chocolate, fortified bread and breakfast cereals, iron-rich fruits like dates and leafy greens such as spinach and kale. Meat, seafood, nuts, and seeds are also good sources of iron. With proper treatment, spoon nails related to anemia can return to normal within 4 to 6 months.
In addition to dietary modifications, maintaining good nail hygiene is important. It is recommended to keep nails trimmed short and clean to prevent infection in the damaged areas. Regular use of a moisturizer or oil on the nails after showering or bathing can also help to maintain nail health and prevent spoon nails from forming.
While spoon nails can be a sign of iron deficiency, it is important to consult a healthcare provider to determine the underlying cause and rule out any other potential medical conditions.
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Horizontal ridges, called Beau's lines, may indicate kidney disease or another underlying condition
Ridges in the fingernails can be indicative of various health issues, including vitamin deficiencies and chronic conditions. However, it is important to note that they are often harmless and may be caused by external factors such as trauma to the nail or overexposure to moisture. In some cases, they may also be a natural occurrence, especially the vertical ridges that appear later in life.
Horizontal ridges, specifically called Beau's lines, can indicate an underlying health issue. These lines are horizontal dents in one or more fingernails or toenails and are usually a sign of an illness, injury, or skin condition that interrupted nail growth. While they are not harmful in themselves, they should not be ignored as they may indicate a chronic condition that requires treatment.
Beau's lines have been specifically associated with acute kidney disease, with one study finding that about 36% of people with end-stage kidney disease exhibited horizontal ridges in their nails. They may also be a symptom of peripheral artery disease, Raynaud's phenomenon, or diabetes. In the case of diabetes, managing blood sugar levels may help reduce these horizontal ridges.
Additionally, nutritional deficiencies, such as a severe zinc deficiency or insufficient protein intake, can also cause Beau's lines. Therefore, it is important to maintain a well-balanced diet that includes essential vitamins and minerals. If you suspect any deficiencies, it is recommended to consult a healthcare professional for further advice and treatment options.
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Vertical ridges are generally not a cause for concern, but can be caused by skin conditions like eczema or hypothyroidism
Ridges in the fingernails can be a sign of vitamin or mineral deficiency, injury, overexposure to moisture, or simply a result of the ageing process. Vertical ridges, in particular, are generally not a cause for concern and are considered normal, especially as you get older. However, they can sometimes be indicative of an underlying skin condition, such as eczema, or a thyroid issue like hypothyroidism.
Vertical ridges typically appear later in life and run from the tip of the fingernail to the cuticle. They are usually not a cause for worry unless accompanied by other symptoms, such as colour changes. Horizontal ridges, on the other hand, known as Beau's lines, may indicate kidney disease or another underlying condition and should be evaluated by a medical professional.
While nail issues can sometimes indicate underlying health issues, they more commonly arise from external factors. Dr Mark Benor, a clinical assistant professor of family medicine, notes that "nail issues usually don’t bespeak a serious underlying illness". Similarly, Dr Sara Norris, a naturopathic doctor, observes that "nail health is most often an indicator of poor nutritional intake or poor digestion".
To address nail concerns, it is recommended to focus on overall health and nutrition. Ensuring a well-balanced diet rich in vitamins and minerals can help improve nail health. Additionally, protecting nails from external damage, such as injury or overexposure to moisture, can help maintain their integrity.
If you are concerned about the appearance of ridges in your fingernails, it is advisable to consult a dermatologist or medical professional. They can help determine if there is an underlying medical cause that requires treatment and provide guidance on improving nail health.
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Frequently asked questions
Ridges can appear as horizontal or vertical lines in your fingernails. They can also be thin, darkened grooves. Vertical ridges generally appear later in life and run from the tip of your fingernail to the cuticle.
Ridges in fingernails can be caused by a variety of factors, including vitamin or mineral deficiencies, health conditions, and lifestyle factors. Horizontal ridges, also called Beau's lines, may indicate kidney disease or another underlying condition. Vertical ridges can be a normal part of aging but can also develop due to skin conditions like eczema or hypothyroidism.
White lines or ridges on your fingernails may be due to deficiencies in zinc, calcium, or B-complex vitamins. All-white or mostly white nails could be due to a selenium deficiency.
If you notice ridges in your fingernails, it is recommended to make an appointment with a dermatologist to determine if there is an underlying medical cause that requires treatment, especially if you have horizontal ridges. Treating or managing any underlying conditions or nutrient deficiencies can help promote the growth of smoother and healthier nails.
Yes, fingernail ridges can also occur due to external factors such as injury, overexposure to moisture, or frequent picking or pushing back of the cuticle. In addition, certain lifestyle factors, such as gel manicures, artificial nails, and dehydration, can contribute to dry, brittle nails, making ridges more pronounced.
