Hair loss is a common issue that affects millions of people around the world. It can be a natural part of the ageing process or due to various factors such as medical conditions, hormones, genetics, diet, and medication. This article will discuss how hair grows, the causes of hair fall, and how to prevent and promote hair growth. We will also explore the possibility of a receding hairline growing back, the time it takes to fix a hairline, and when to consult a doctor for hair loss.

How does hair grow?

Hair growth occurs in a cyclical process that consists of three phases: anagen (growth), catagen (transition), and telogen (resting).

  • Anagen phase: The anagen phase is the initial and most active stage in the hair growth cycle, during which the hair follicles produce new hair strands. This stage lasts anywhere from 2 to 8 years, depending on an individual’s genetics, age, and overall health. During the anagen phase, hair cells divide rapidly, leading to continuous hair growth at a rate of approximately half an inch (1.25 cm) per month. Factors such as diet, stress, and hormonal balance can influence the duration and effectiveness of the anagen phase, ultimately affecting the hair’s overall health and length.
  • Catagen phase: The catagen phase is a transitional period that bridges the gap between the active anagen phase and the resting telogen phase. Lasting for about 2 to 3 weeks, this stage marks the end of active hair growth. In the catagen phase, the hair strand detaches from the blood supply, and the hair follicle begins to shrink, causing the hair strand to move upward towards the surface of the scalp. This phase prepares the hair strand for the eventual shedding that occurs during the telogen phase.
  • Telogen phase: The telogen phase is the final stage of the hair growth cycle, where hair strands enter a resting state. This phase lasts for about 2 to 4 months, during which hair growth ceases, and the hair strand remains anchored in the hair follicle. At the end of the telogen phase, hair strands are shed naturally, and the hair follicles re-enter the anagen phase to begin the growth cycle anew. On average, it is normal for a person to shed 50 to 100 hair strands daily during the telogen phase.

What are the causes of hair fall?

Hair fall can be attributed to several factors, including:


As we age, hair loss becomes a common phenomenon. With the natural aging process, hair follicles gradually weaken, resulting in thinner hair strands and slower hair growth. This process, known as senescent alopecia, is characterised by a reduction in hair density and volume. The hair cycle phases also change as we age, with the growth phase (anagen) shortening and the resting phase (telogen) lengthening. This leads to a reduction in the overall hair production and eventually hair loss.

Medical Conditions

Various medical conditions can cause hair loss. Some of the most common include:

  • Alopecia areata: An autoimmune disorder that causes the immune system to attack hair follicles, leading to sudden hair loss in small, round patches on the scalp or other areas of the body.
  • Telogen effluvium: A temporary hair loss condition often triggered by physical or emotional stress, which leads to an increase in the number of hair follicles entering the resting phase, resulting in excessive shedding.
  • Traction alopecia: Hair loss caused by constant pulling or tension on the hair, often due to tight hairstyles or hair extensions.
  • Scalp infections: Conditions such as ringworm or folliculitis can cause hair loss due to inflammation and damage to the hair follicles.
  • Thyroid disorders: Both hypothyroidism and hyperthyroidism can lead to hair loss, as thyroid hormones are essential for regulating hair growth.


Hormonal imbalances can significantly impact hair growth and lead to hair loss. One of the most common hormonal causes is androgenetic alopecia, also known as male or female pattern baldness. This condition is caused by an increased sensitivity to dihydrotestosterone (DHT), a hormone derived from testosterone, which can cause hair follicles to shrink and eventually stop producing hair. Additionally, hormonal changes during pregnancy or menopause, as well as polycystic ovary syndrome (PCOS), can cause hair loss in women.


Genetics plays a significant role in hair loss, particularly in androgenetic alopecia. The condition can be inherited from either or both parents, with multiple genes contributing to the susceptibility of hair follicles to DHT. Genetic factors can determine the age of onset, rate of hair loss, and the severity of the condition.

Diet and medication

A poor diet can contribute to hair loss by depriving the body of essential nutrients required for healthy hair growth. Deficiencies in vitamins and minerals such as iron, zinc, vitamin D, and biotin can lead to hair loss. Additionally, certain medications, including chemotherapy drugs, blood thinners, and antidepressants, can have hair loss as a side effect. It is crucial to consult with a healthcare professional before stopping or changing any medication.

How to prevent hair fall?

To prevent hair fall, consider the following steps:

  • Maintain a balanced diet: A diet rich in essential nutrients like protein, iron, and vitamins can support healthy hair growth.
  • Avoid tight hairstyles: Hairstyles that cause tension on the hair follicles, such as ponytails and braids, can lead to traction alopecia.
  • Be gentle with your hair: Minimise harsh treatments like excessive heat styling, chemical treatments, and vigorous brushing to reduce hair breakage.
  • Manage stress: Incorporate stress-reducing activities like exercise, meditation, and yoga into your routine to mitigate stress-related hair loss.
  • Consult your doctor: If you suspect a medical condition or medication is causing hair loss, speak with a healthcare professional to determine the appropriate course of action.

How to promote hair growth?

  • Scalp massage: Gently massaging your scalp can help stimulate blood flow and promote hair growth.
  • Use hair growth-promoting products: Certain topical treatments, like minoxidil, have been shown to encourage hair growth in some individuals.
  • Supplements: Biotin, vitamin D, and zinc supplements may help support healthy hair growth, but consult your doctor before starting any new supplements.
  • Laser therapy: Low-level laser therapy is a non-invasive treatment that uses red light to stimulate hair growth and has shown promising results for some individuals.
  • Platelet-rich plasma (PRP) therapy: PRP therapy involves injecting a concentration of your own platelets into the scalp to promote hair growth. Some studies have shown positive results with this treatment.

Scalp care and hair products:

Proper scalp care and using appropriate hair products can help maintain a healthy scalp environment, which is essential for hair growth. Consider the following:

  • Use a gentle, sulphate-free shampoo that doesn’t strip natural oils from the scalp.
  • Avoid excessive use of heat-styling tools, which can damage hair and contribute to hair loss.
  • Choose a conditioner with nourishing ingredients to keep your hair moisturised and less prone to breakage.
  • Incorporate a hair oil or serum that contains essential oils such as rosemary, peppermint, or lavender, which may help stimulate blood circulation in the scalp and promote hair growth.
  • Exfoliate your scalp regularly using a gentle scrub to remove dead skin cells and unclog hair follicles.

Can a receding hairline grow back?

Growing a receding hairline back can be challenging, but certain treatments and lifestyle changes may help slow down hair loss or promote regrowth in some cases. The effectiveness of these approaches can vary from person to person and depends on factors such as the cause of hair loss, its extent, and individual response to treatments. Here are some options to consider:

  • Hair transplantation

In this surgical procedure, healthy hair follicles are harvested from areas of the scalp with sufficient hair growth and transplanted to the areas affected by the receding hairline. Hair transplantation can provide long-lasting and natural-looking results but can be expensive and may require multiple sessions to achieve the desired outcome.

  • Low-level laser therapy (LLLT)

This non-invasive treatment uses red light to stimulate hair growth by increasing blood flow to the hair follicles and reducing inflammation. LLLT can be administered using laser combs, helmets, or caps and may be a suitable option for individuals with mild to moderate hair loss.

  • Platelet-rich plasma (PRP) therapy

PRP therapy involves injecting a concentrated solution of the patient’s own blood platelets into the scalp. The growth factors present in platelets can stimulate hair follicles, promoting hair growth and reducing hair loss. However, this treatment can be expensive and may require multiple sessions.

Lifestyle changes

  • Maintain a balanced diet rich in vitamins, minerals, and proteins to support healthy hair growth.
  • Reduce stress levels, as chronic stress can contribute to hair loss.
  • Avoid tight hairstyles or hair extensions that cause tension on the hair and scalp, leading to traction alopecia.
  • Treat any underlying medical conditions, such as thyroid disorders or scalp infections, that may contribute to hair loss.

It is essential to consult with a healthcare professional or dermatologist to determine the most appropriate treatment plan for your specific case, considering the cause of the hair loss and your individual needs.

How long does it take to fix a hairline?

The time it takes to fix a hairline depends on the underlying cause of the hair loss and the chosen treatment method. In some cases, hair may begin to regrow within a few months, while in others, it may take longer. It is crucial to be patient and consistent with your chosen treatment, as results can vary from person to person. Remember that hair growth is a slow process, and it may take several months or even years to see noticeable improvements.

When should I go to the doctor for hair loss?

Consult a doctor or dermatologist if you experience any of the following:

  • Sudden or severe hair loss: Significant hair loss in a short period may indicate an underlying medical condition that requires attention.
  • Patchy hair loss: Hair loss in specific areas or the presence of bald patches could be a sign of conditions like alopecia areata, necessitating medical intervention.
  • Pain, itching, or inflammation: A red, itchy, or painful scalp could indicate a skin infection or another medical issue that requires treatment.
  • Hair loss after starting a new medication: If you notice hair loss after beginning a new medication, consult your doctor to discuss potential alternatives or adjustments to your treatment plan.
  • No improvement with over-the-counter treatments: If over-the-counter hair loss treatments have not been effective, it may be time to consult a doctor for a more targeted approach and personalised treatment plan.

Alternative and complementary therapies

Some individuals explore alternative therapies for hair loss, such as acupuncture, massage, or herbal supplements. While scientific evidence supporting their effectiveness may be limited, these treatments may help reduce stress or improve scalp circulation, indirectly promoting hair growth. Always consult with a healthcare professional before trying any new supplements or therapies.

Psychological support and coping mechanisms

Hair loss can have a significant emotional impact on individuals, affecting self-esteem and confidence. Seeking psychological support, such as counselling or support groups, can help you cope with the emotional aspects of hair loss. Additionally, consider the following coping strategies:

  • Experiment with different hairstyles, wigs, or hairpieces to camouflage hair loss and boost your confidence.
  • Use hair fibres, sprays, or powders to create the appearance of fuller hair.
  • Focus on self-care and nurturing a positive self-image that goes beyond physical appearance.

Future treatments and research

Ongoing research in the field of hair loss aims to develop new and more effective treatments. Techniques such as stem cell therapy, hair follicle cloning, or gene therapy are being investigated, although they are not yet available for widespread use. Staying informed about advances in hair loss research can provide hope and potential treatment options in the future.

Hair loss is a complex issue that affects millions of people worldwide. Understanding the causes and learning how to prevent and promote hair growth can help mitigate the impact of hair loss on your life. Early intervention is key, so do not hesitate to consult a doctor or dermatologist if you are concerned about your hair health. Patience and consistency with treatment are crucial, as hair regrowth can be a slow process. By taking a proactive approach, you can improve your chances of maintaining a healthy head of hair.

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