Isla Bennett
Several factors influence the rate of nail growth, including genetics, nutrition, blood circulation, hormones, overall health, age, exposure to injury or trauma, and the environment. While there is no scientifically proven method to accelerate nail growth, maintaining healthy habits and consuming a balanced diet rich in essential nutrients can promote stronger and faster-growing nails. Additionally, factors such as the season, dominant hand, and frequency of use can impact the growth rate, making it a dynamic process influenced by both intrinsic and extrinsic factors.
| Characteristics | Values |
|---|---|
| Average growth rate of fingernails | 3.47-3.5 mm per month or 0.1 mm per day |
| Average growth rate of toenails | 1.62 mm per month |
| Factors influencing nail growth | Genetics, nutrition, blood circulation, hormones, overall health, age, exposure to injury or trauma, environment, temperature, climate, season, time of year, gender, pregnancy, medication |
| Ways to strengthen nails | Taking biotin supplements, using nail hardeners sparingly, regular nail grooming and trimming, keeping nails dry and clean, using sharp manicure scissors or clippers, moisturising hands and nails with lotion, avoiding contact with allergens and irritants, minimising use of nail gels or acrylics |
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What You'll Learn
Genetics and family history
Genetics play a significant role in determining the rate at which an individual's nails grow. Genetic predisposition can lead to rapid nail growth, with some people inheriting this trait from their parents or grandparents. The thickness of the nail plate is also influenced by genetics.
In addition to genetics, overall health, and age, environmental and external factors also influence nail growth. Warmer climates tend to promote faster nail growth compared to colder ones, as heat increases blood circulation, delivering essential nutrients to the nail matrix.
Good overall health and a balanced diet rich in essential nutrients like biotin, protein, and vitamins can also promote nail growth. Biotin, also known as vitamin B7, is an important type of B vitamin that helps the body convert food into energy and is highly recommended as a supplement to boost nail strength. Several human studies suggest that taking a biotin supplement daily can help strengthen nails and reduce breakage.
Age is another factor that impacts nail growth, with younger individuals typically experiencing faster nail growth compared to older adults. Health conditions impacting nail growth are more common in older people, such as fungal infections, which can affect nail growth rate.
Hormones also play a role in nail growth, with pregnancy, puberty, and lactation influencing nail growth rates. During pregnancy, for example, nails tend to grow faster due to increased estrogen and progesterone levels. On the other hand, during lactation, nail growth may slow down.
While there are no scientifically proven methods to make nails grow faster, maintaining a healthy diet and incorporating nutrients such as protein, biotin, vitamins, zinc, and iron can promote stronger and faster nail growth.
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Nutrition and diet
While there are many factors that influence nail growth rates, such as genetics, health, age, hormones, and blood circulation, diet also plays a crucial role.
Nails are primarily made of a fibrous structural protein called keratin. This protein gives nails their strength and resilience, protecting them from damage or stress. Therefore, consuming enough protein is essential for boosting keratin production and creating strong nails. Good sources of protein include lean meats, fish, eggs, dairy products, beans, legumes, quinoa, tofu, and nuts.
In addition to protein, several other nutrients are important for nail health. Biotin, a B vitamin, helps improve the structure of keratin, making nails stronger and less prone to splitting or breaking. Foods rich in biotin include eggs, nuts, seeds, salmon, sweet potatoes, avocados, and even cauliflower. Vitamin C is also essential for nail health, as it aids in collagen production and iron absorption. Citrus fruits, strawberries, bell peppers, and broccoli are excellent sources of vitamin C.
Zinc is another critical mineral for nail growth and repair. A deficiency in zinc can cause white spots on nails and slow down their growth. Oysters, beef, pumpkin seeds, and chickpeas are all good sources of zinc.
Healthy fats, such as those found in salmon and other fatty fish, help supply the body with magnesium, which is essential for nail health. Nuts, seeds, and avocados are also excellent sources of healthy fats that promote nail growth and strength.
Finally, hydration is crucial for nail health. Drinking enough water helps maintain nail health and prevents dry, brittle nails that are more prone to breaking.
In summary, a balanced diet rich in protein, biotin, vitamins C and D, zinc, and healthy fats is key to promoting strong and fast-growing nails.
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Blood circulation
The speed at which nails grow is influenced by various factors, including genetics, nutrition, blood circulation, hormones, overall health, age, exposure to injury or trauma, and the environment. While there are no scientifically proven methods to accelerate nail growth, maintaining good overall health and consuming a balanced diet rich in essential nutrients can promote stronger and faster nail growth.
Good blood circulation is essential for nail growth, as it ensures that the nails receive the necessary nutrients and oxygen. The nail bed, located beneath the nail plate, connects the nail to the blood supply, influencing its colour and health. A well-established blood supply results in faster nail growth. Conversely, slower nail growth may be attributed to reduced blood circulation in older individuals.
One indicator of blood circulation in the nails is their colour. Healthy nails should be smooth, hard, free of dents or grooves, and consistent in colour. A quick way to assess blood flow to the nail bed is through the capillary nail refill test. This test involves applying pressure to the nail bed until it turns white due to blood being forced out of the underlying tissue, a process called blanching. Once pressure is released, the time it takes for blood to return to the tissue is measured, with a pink colour typically returning in less than 2 seconds for healthy blood flow.
Additionally, activities that stimulate blood circulation in the nail bed, such as nail clipping or biting, have been associated with faster nail growth rates. However, it is important to note that nail biting carries risks, and regular nail clipping is a safer alternative. While blood circulation is a contributing factor to nail growth, it is just one aspect of overall health that influences nail growth rates. Maintaining a healthy diet, proper nutrition, and overall well-being are crucial for promoting optimal nail growth and overall nail health.
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Hormones and health
Fingernails grow at an average rate of about a tenth of a millimeter per day or about 3.5 millimeters per month. Toenails grow much slower, at an average rate of 1.62 mm per month. The rate of growth depends on factors such as age, hormone levels, health, and which finger the nail is on.
Hormones play an important role in nail growth and health. For example, during pregnancy, when oestrogen and progesterone levels are at their highest, many women experience rapid nail growth. Lower oestrogen levels can contribute to dull, yellowish nails. Similarly, higher levels of testosterone and DHT can cause hair loss and body hair growth. Women with PCOS, insulin resistance, or those experiencing a post-pill androgen surge often have higher levels of testosterone and DHT.
Thyroid problems can also cause changes to the body's hormones, which can show up on the nails. Thyroid disease could cause onycholysis, the loosening and softening of the nails.
Health conditions and injuries can also affect the nail matrix, which is where your fingernails and toenails form. A serious illness, such as a heart attack, COVID-19, or pneumonia, can interrupt nail growth and cause Beau's lines (horizontal ridges in your nails). Injuries to the nail matrix can cause bruising, ridges, discolouration, or even the nail falling off.
To improve nail health, it is recommended to take biotin supplements, use nail hardeners sparingly, and maintain proper nutrition and nail hygiene.
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Environmental factors
Temperature and Climate
Nail growth is generally faster in warmer climates compared to colder ones. This is because heat increases blood circulation, delivering essential nutrients to the nail matrix and stimulating faster nail growth.
Seasonality
Nails tend to grow faster during the warmer months, although the difference may be subtle.
Trauma and Injury
Trauma and injury to the nail can accelerate nail growth as the body sends more blood and nutrients to the affected area to support healing. This is more common with the dominant hand as it is used more frequently and is more prone to injury.
Work and Lifestyle
The type of work a person does and their lifestyle can also influence nail growth. For example, those who work with their hands or in harsh conditions may experience slower nail growth or more frequent breakage.
Overall Health and Nutrition
While not strictly environmental, a person's overall health and nutrition can be influenced by their environment. Poor health, chronic illnesses, and nutritional deficiencies can cause slower nail growth. A well-balanced diet rich in essential nutrients like biotin, protein, and vitamins is key to promoting nail growth.
In summary, environmental factors such as temperature, climate, and lifestyle can impact nail growth. Additionally, trauma and injury to the nail, influenced by lifestyle and work, may also play a role in nail growth rates. Overall health and nutrition are key internal environmental factors that contribute to nail growth, with nutritional deficiencies potentially causing slower growth.
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Frequently asked questions
Genetics, diet, overall health, age, environmental and external factors, and exposure to injury or trauma all influence how fast your nails grow.
Healthy nails grow on average about 3.47 millimeters per month or about one-tenth of a millimeter a day. Toenails grow slower, at an average rate of 1.62 millimeters per month.
Yes, the nails on your dominant hand tend to grow faster than the nails on your non-dominant hand. Nails on longer fingers also tend to grow faster.
There is no scientifically proven method for making nails grow faster. However, taking care of your overall health and nutrition can help promote stronger and faster nail growth over time.
