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Hair Again Clinic

The most common causes of hair loss.

1. Androgenetic alopecia

Genetics can be one of the leading causes of hair loss worldwide, where certain genes predispose you to hair loss. If someone in your family has experienced hair loss, this increases your chances of developing a hereditary hair loss condition.


In men, the most common condition is androgenetic hair loss, also known as male pattern baldness. Early signs of this type of hair loss include thinning and fine hair, a receding hairline, and excessive hair loss.


In women, the condition is known as female pattern hair loss. Although not as severe as the male counterpart, this condition can still dramatically affect women, who will see an overall thinning of the hair, concentrating on the top and crown of the scalp.

While there is no cure for male pattern baldness, there are treatments available that can slow and stop its progression.


2. Hormonal Fluctuations

Hormones are incredibly important chemicals our body produces and uses to perform various functions. But as we grow older, certain life stages we reach can lead to hormonal imbalances.

These imbalances, especially when hormones like DHT are concerned, can lead to shrunken hair follicles, hair thinning, and premature hair loss.


So what triggers these types of hair loss?

For women, giving birth, and taking birth control pills, as well as menopause, can alter hormones in the system. This often leads to developing conditions such as frontal fibrosing alopecia.

For men, these changes can be triggered with age.


3. Thyroid Issues

Your thyroid is one of the most important glands in the body, responsible for producing hormones that regulate your heart rate and body temperature. If you suffer from thyroid disorders, this can result in hair loss.


Hyperthyroidism is when your thyroid over-produces hormones, while hypothyroidism is when there’s too little. Both can trigger hair loss conditions and can be treated with medications. Once you regulate your hormone production again, your hair will begin to regrow.


4. Medications

Certain medications may list hair loss as a side effect of treatment. This kind of hair loss is often temporary, and once your course of treatment ends, your hair will gradually grow back.


Medications that often have this side effect include:

  • Antidepressants

  • Some oral contraceptives

  • Thyroid-related medications

  • Anticoagulants (blood thinners)

  • Anticonvulsants (seizure medication)

  • Beta-blockers

That said, every patient experiences medication differently, and you are not guaranteed to lose hair in the same manner as someone else. If worried, consult with your doctor, as they may have an alternative recommendation that can help alleviate symptoms. Never stop taking the medication without their advice.


5. High Stress Levels

Stress is something we all experience at some point in our lives. But if you experience it for prolonged periods, stress can affect the quality and quantity of your hair. It’s a vicious cycle – high stress levels can trigger hair loss, intensifying our original stress levels. But there are ways of breaking this cycle.



The following methods are a common way for many people to reduce stress levels and improve their lifestyle:

  • Exercising each day, e.g., going for a short walk

  • Practice mindfulness, including meditation and yoga

  • Improve your diet by eating more vegetables and fruits

  • You should also try to avoid stressful situations whenever possible.

If you cannot manage and reduce your stress and feel it is impacting your health and your hair, consult your doctor.


6. Lupus

Lupus is an autoimmune condition that can cause joint pain, rashes, fatigue, and hair loss. Your immune system mistakenly attacks healthy tissue in your body, including hair follicles.

As such, lupus may trigger patchy hair loss and skin lesions to develop across your scalp. Certain medications used to treat the condition can also contribute to hair problems.


7. Nutrition Deficiencies

Like any other body part, your hair requires a certain level of nutrition to grow to its potential. If it lacks specific vitamins or minerals, then it will grow short and thin and may fall out earlier than expected.

Examine your diet and try to improve the quality of the food you are taking. Vitamins and nutrients to pay particular attention to include Vitamins A, B-12 (Cobalamin),B7 (Biotin) C, and D. You should also focus on healthy fats, copper, iron, zinc, and selenium.


If you are following a diet, consult with your doctor on possible deficiencies you might be experiencing. They may recommend specific foods and include vitamin and mineral supplements to improve your nutrition.


8. Telogen Effluvium

Your hair follows a strict hair growth cycle. Any disruption to it can cause significant complications, including sudden hair loss.

Telogen Effluvium is defined as excessive hair shedding caused when unusually large amounts of hair in the third phase of the growth cycle. High-stress levels, certain medications, and thyroid issues can trigger the condition.


You may also experience telogen effluvium following major life events, like childbirth, surgery, or dramatic weight loss. Though excessive shedding can feel alarming, hair will begin to grow back once the triggering event has been overcome.


9. Anagen Effluvium

Anagen effluvium is a condition where sudden hair loss occurs because the anagen (or growth) phase is affected.

Hair does not grow as long as it should and sheds earlier than expected. Possible causes include chemotherapy, exposure to harsh chemicals and radiation, fungal infections, and autoimmune diseases.

Depending on its cause, treatment varies between patients, though most often, medication is prescribed to help stimulate and extend hair growth. If undergoing chemotherapy, devices such as cooling caps can help reduce hair loss.



10. Traction alopecia

Repetitive stress or tension on hair can cause a hair loss condition known as traction alopecia. Hair strands are pulled to such a degree that they stop growing, shed earlier than expected, and can lead to patches of baldness across your scalp.


Tight hairstyles that pull on hair, including tight braids, ponytails, cornrows, weaves, and clip-in hair pieces, can all contribute to this condition. Try to wear hair as loose as possible, and vary your styles often to reduce consistent pressure on the hair.


Additionally, traction alopecia can be caused by physically pulling out your hair. This can result from disorders like trichotillomania, which sees people pulling their hair out as a coping mechanism for stress.

Extreme hair pulling can disrupt healthy hair growth and lead to permanent hair loss. Seeking medical assistance to develop healthier coping strategies is highly advisable.


11. Alopecia Areata

As an autoimmune disease, alopecia areata causes your immune system to mistakenly attack hair follicles, causing sudden hair loss in the shape of circles.

This hair loss isn’t limited to the scalp and can take hold of eyebrows and eyelashes. Though there’s no cure, you must see your doctor as soon as possible to alleviate symptoms and limit further hair loss.

Certain medications can be instrumental in helping stimulate follicles to grow hair again.


12. Aggressive hair styling practices

Aggressive hair styling is sadly one of the most common and easily avoidable causes of hair loss. Using devices and tools like curling irons, hair straighteners, or dryers can expose hair to extreme heat, weakening it and leading to hair thinning and early shedding.


Additionally, using products with harsh chemicals, including shampoos, conditioners, and hair dyes, can cause hair loss. Continued use will strip your hair of its natural defences, dry it out and weaken your hair follicles.

Finally, examine how you’re taking care of your hair. Extreme physical trauma can be inflicted when brushing hair aggressively, especially when wet. Instead, consider towel drying gently and only brushing hair when it has fully dried.


13. Dramatic weight loss

Any dramatic changes to your body, including weight loss, can have side effects and repercussions for your body. This is because often, during weight loss, people follow strict diets, which can lead to nutritional deficiencies.

Additionally, the added stress of high-intensity physical exercise can increase sweating, leading to clogged hair follicles and increased hair shedding.


14. Age

We often think that age only affects women’s hair. Menopause, for example, can cause significant hormone imbalances, leading to noticeable thinning and hair fall.

But men can also be a victim of age-related hair loss, developing thinner, weaker hair that sheds earlier than expected.

Unfortunately, you can do little to prevent or combat this type of hair loss. If you’re worried about hair loss as you grow older, you should visit your doctor as early as possible to start preventative treatments that maintain and preserve current hair.


15. Other Health Issues

Other health conditions contributing to hair loss include inflammatory bowel disease (IBS), Diabetes, liver disease, or renal (kidney) failure.

Additionally, certain skin conditions can negatively affect your scalp, causing hair follicles to become clogged or damaged. These include infections like folliculitis or ringworm, dermatitis, and psoriasis.


Our aim is to help you try and find the causes of your hair loss and find realistic solutions to help ease your hair loss trauma, as many people do find hair loss very traumatic.

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