Isla Bennett
Fingernails and toenails are made of skin cells, specifically a hard substance called keratin. The nail matrix, or the factory where your body makes nails, is responsible for nail growth. While genetics plays a role in nail growth, injuries and certain health conditions can also affect the nail matrix and slow down nail growth. For example, peripheral artery disease (PAD) reduces blood flow to the legs and feet, interfering with the nail matrix's function. Additionally, skin conditions like severe eczema and psoriasis can cause temporary nail growth interruptions. On the other hand, habits like nail-biting and frequent nail clipping are associated with faster nail growth due to increased circulation in the nail bed. While there are no proven methods to accelerate nail growth, maintaining good nail hygiene and taking supplements like biotin can strengthen nails and prevent breakage.
| Characteristics | Values |
|---|---|
| Factors affecting nail growth | Age, sex, season, exercise level, diet, hereditary factors, and hormone levels |
| Nail growth rate | Fingernails: 3mm per month or 3-6 months for a complete regrowth; Toenails: 12-18 months for a complete regrowth |
| Nail composition | Skin cells, specifically hard keratin |
| Nail matrix | The "factory" where new nails are formed; located under the base of the nail |
| Nail bed size and shape | Determined by genetics |
| Nail health | Nutrient deficiencies can affect nail appearance; certain vitamins and nutrients promote nail health |
| Nail hygiene | Proper trimming, filing, and moisturizing can prevent nail biting and infections |
| Nail disorders | Ingrown nails, nail deformities, hangnails, nail infections, and nail injuries |
| Nail treatments | Biotin supplements, nail hardeners, and medical treatments for severe cases |
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What You'll Learn
- Nail matrix: The nail matrix is the factory where nails are made, and injuries to it can slow growth
- Nutrition: Nutritional deficiencies can cause slow nail growth and discolouration
- Hormones: Puberty increases nail growth, but it slows as hormone levels balance with age
- Genetics: Genes determine nail bed size and shape, and can affect growth rates
- Hygiene: Good nail hygiene can help nails grow faster and stronger
Nail matrix: The nail matrix is the factory where nails are made, and injuries to it can slow growth
The nail matrix is the area where your fingernails and toenails are formed. It is the "factory" where your body makes new nails. The nail matrix has two parts: the germinal matrix and the sterile matrix. The germinal matrix, located below the lunula (the white crescent shape at the base of the nail), produces about 90% of nail cells, giving a natural curvature to the nail. The remaining 10% of nail cells are produced by the sterile matrix, which is located above the lunula. The sterile matrix is also responsible for keeping the nail attached to the underlying skin.
The nail matrix is constantly producing new nail cells, which push out the old, dead skin cells to make your nails grow. A healthy nail matrix is essential for healthy nails. However, injuries and certain health conditions can damage the nail matrix and interfere with nail growth. For example, pinching or crushing your finger or dropping something heavy on your toe can injure the nail matrix. Peripheral artery disease (PAD), which reduces blood flow to the legs and feet, can also affect the nail matrix and slow nail growth.
In some cases, a severe injury to the nail matrix can cause the nail to fall off. However, with proper medical care, the nail will usually grow back. It may take several weeks for the new nail to appear. Minor damage to the nail matrix can also temporarily change the appearance of the nail, such as its texture or colour.
In rare cases, severe damage to the nail matrix may result in permanent nail loss. If the germinal matrix at the base of the nail is deeply traumatised, the nail may never grow back. However, this is uncommon, and with proper treatment, healthy nails can often be restored.
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Nutrition: Nutritional deficiencies can cause slow nail growth and discolouration
Nutritional deficiencies can have a significant impact on nail health, causing slow nail growth and discolouration. Nails can act as a window to your overall health, and nutrient deficiencies can manifest in various ways. For instance, vitamin B12 deficiency can cause discolouration of the nails. Vitamin D deficiency has also been linked to longitudinal melanonychia of the nail plate, a condition characterised by discolouration. Additionally, vitamin A deficiency can lead to hapalonychia, resulting in soft nails.
Iron deficiency is another common nutritional deficiency that can affect nail health. It can cause koilonychia, a condition characterised by spoon-shaped nails. Iron deficiency can also lead to brittle nails, which may be more prone to breakage and slow growth. In some cases, iron deficiency can be severe enough to disrupt normal nail growth, resulting in Beau's lines—transverse linear depressions in the nail plate.
Vitamin C deficiency, often associated with scurvy, can also cause nail abnormalities. It is linked to koilonychia and hapalonychia, similar to iron deficiency. Protein deficiency and malnutrition due to chronic alcoholism can also manifest as Beau's lines.
While nutritional deficiencies can impact nail health, it's important to note that nail issues can also arise from external factors, such as injury, overexposure to moisture, or the use of certain nail products. Maintaining proper nail care practices and consulting a healthcare professional can help address any concerns.
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Hormones: Puberty increases nail growth, but it slows as hormone levels balance with age
Puberty is a time of significant hormonal fluctuations, and it is said that nail growth reaches its peak during this stage of life. This is because hormones play an important role in nail growth and health. Oestrogen, for example, helps to keep water in body tissues, and adequate hydration is key to healthy nails. Therefore, lower oestrogen levels can contribute to dull, brittle, or yellowish nails. Similarly, testosterone is needed for protein (keratin) synthesis, which is essential for nail health.
During pregnancy, when oestrogen and progesterone levels are at their highest, many women experience rapid nail growth. This is thought to be due to increased peripheral blood flow induced by oestrogen, which stimulates faster nail growth. However, during breastfeeding, when hormone levels decrease, nail growth slows down again.
As people age, their hormone levels tend to balance out, and nail growth typically slows as a result. This is partly due to a decrease in blood circulation, which slows the absorption of nutrients needed for nail growth. Additionally, the parathyroid glands, which regulate calcium and vitamin D, may produce less parathyroid hormone over time, leading to brittle nails.
Apart from hormones, other factors that influence nail growth include climate, dominant hand use, trauma, and nutrition. For instance, nails tend to grow faster in the summer than in the winter, possibly due to circulatory changes. Nails on the dominant hand also tend to grow faster due to more frequent use and shocks. Trauma, such as nail biting or injury, can stimulate blood circulation in the nail bed, promoting faster nail growth. Finally, a balanced diet rich in nutrients is essential for nail health, as deficiencies can impact nail growth.
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Genetics: Genes determine nail bed size and shape, and can affect growth rates
Genetics play a significant role in determining the size and shape of nail beds, influencing both growth rates and overall appearance. The length and shape of an individual's nail beds are largely influenced by their genetic makeup, with specific genes dictating these characteristics. If a person has short nail beds, it is likely that their parents also have similar nail bed features.
While genetics predominantly shapes nail bed attributes, other factors also come into play. Nail injuries, for instance, can alter the appearance of nail beds, sometimes leading to nail separation from the nail bed itself. Certain skin conditions, such as severe eczema, can also impact the nail matrix, causing temporary disruptions in nail growth and resulting in anomalies like Beau's lines, pitting, and texture or colour changes.
Additionally, peripheral artery disease (PAD) can affect nail growth by reducing blood flow to the legs and feet, thereby influencing the nail matrix. Nail psoriasis, observed in up to 80% of individuals with psoriasis, can induce changes like white lines, pitting, and crumbling. Subungual melanoma, a type of skin cancer, may manifest as brown or black discolouration on the nail, warranting medical attention.
The shape of an individual's nails can also be influenced by genetics. Sword-shaped nails, for example, are prone to splitting at the sides or down the middle due to their genetic predisposition. This shape may require regular treatments and a gel overlay to prevent damage.
While genetics set the foundation for nail bed size and shape, it is important to note that certain habits and practices can affect nail growth and overall nail health. Biting nails, for instance, can stimulate circulation in the nail bed, leading to faster nail growth. Similarly, regular nail clipping has been associated with longer nails, providing an alternative to the potentially harmful practice of nail-biting. Maintaining good nail hygiene and addressing nutritional deficiencies can also promote healthy nail growth.
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Hygiene: Good nail hygiene can help nails grow faster and stronger
Good nail hygiene is essential for maintaining healthy nails and promoting faster and stronger nail growth. Here are some tips to achieve that:
Keep Nails Clean and Dry: Bacteria and fungi thrive in moist environments, so maintaining clean and dry nails is crucial. Wash your hands regularly and ensure your nails are free from dirt and debris. Avoid excessive water exposure, as it can weaken nails, leading to splitting, peeling, or breaking. Wear gloves when washing dishes or cleaning to protect your nails from moisture and harsh chemicals.
Proper Nail Trimming and Filing: Trim your nails regularly using sharp nail scissors or clippers. Cut nails straight across and slightly round the tips for maximum strength. Avoid cutting nails too short, as this can lead to ingrown nails. Use an emery board to file your nails and keep them shaped and smooth, preventing snags and tears.
Moisturize and Nourish: Moisturize your nails and cuticles regularly to maintain hydration and prevent dryness. Use nail lotions, oils, or cuticle creams to nourish and strengthen your nails. Additionally, drinking enough water throughout the day is essential for overall nail health, as it helps nails retain moisture and stay strong.
Protect Nails from Trauma: Avoid using your nails as tools, such as opening cans or picking at surfaces, as it can cause chipping, splitting, or lifting of the nail bed. Keep your toenails trimmed short to minimize the risk of trauma and injury. When trimming thick toenails, soak your feet in warm salt water to soften them before cutting.
Address Nutritional Deficiencies: Nutritional deficiencies can impact nail health and growth. Ensure you eat a nutrient-dense and varied diet, including protein and collagen-rich foods. Consider taking supplements like biotin, which has been shown to reduce nail breakage and improve overall nail health. Always consult with a healthcare professional before starting any supplements.
By practicing good nail hygiene and following these tips, you can promote faster and stronger nail growth, resulting in healthy and attractive nails.
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Frequently asked questions
There is no scientifically proven method to make nails grow faster. However, there are ways to increase the overall health of your nails, making them less prone to breakage and giving them the best chance of healthy growth.
You can take biotin supplements, use nail hardeners (sparingly), and regularly moisturize your hands and nails. It is also important to stick to a healthy diet and to limit nail damage by avoiding aggressive manicure techniques.
You should avoid glue-on artificial nails, biting your nails, and using products that require harsh removal methods, such as acetone for gel nails. Water can also weaken your nails, so it is recommended to wear gloves when washing dishes or performing other tasks that involve water.
Yes, nail growth can be influenced by factors such as age, hormones, and certain medical conditions. For example, nail growth typically peaks during puberty and slows down as hormone levels balance out with age. Additionally, medical conditions like diabetes can reduce circulation to the nails, making them weaker.
