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Why Do Men Lose Their Hair?

If you’re reading this, you’ve probably noticed your hairline creeping back or caught yourself checking the back of your head in every available photo. 

Hair loss doesn’t discriminate. It can sneak up gradually over the years, or it can feel like it’s happened overnight. But one thing seems to be common: 

If you’re male, there’s a strong chance you’ll experience hair loss. 

It’s in the data: around 80% of Australian men will experience some form of hair loss in their lifetime, according to a 2019 review by Sinclair Dermatology.

So why do so many men lose their hair? 

Male hair loss comes down to a combination of factors, both genetic and lifestyle-related. But understanding the ‘why’ behind hair loss is the first step in taking control. 

This article will walk you through the leading causes of male hair loss, the early signs to look out for, and most importantly, what you can actually do about it — including how The Hairy Pill’s personalised approach can help you fight back. 

Key Takeaways

  • You’re not alone! Male hair loss affects 80% of Australian men and typically results from a combination of genetic and external factors. 
  • You have your genes to blame (most of the time)! If you have a history of male hair loss in the family, you’ll probably be affected too. 
  • Age and hormones matter too. Most male hair loss is caused by a genetic sensitivity to DHT, a powerful hormone derived from testosterone. If your follicles are sensitive to DHT, they’ll gradually shrink and stop producing hair as you get older.
  • Lifestyle plays its part too. Sudden or diffuse hair loss may be due to other factors, such as stress, nutritional deficiencies, thyroid issues, or certain medications. 
  • Male pattern baldness (androgenetic alopecia) accounts for 95% of male hair loss cases. It causes gradual thinning at the temples and crown. But if your hair loss is patchy, comes on suddenly, or is accompanied by other symptoms like itching or irritation, it could signal an underlying health condition. 
  • Personalised treatments are the best approach. Doctor-led, custom-formulated treatments help address the root cause of your hair loss. Just remember: the earlier you start treatment, the better your shot at regrowth. 

What Causes Hair Loss in Males? 

It’s the inevitable question that arises when you notice your hairline creeping back: Why do men lose their hair? 

The answer isn’t as simple as ‘it just happens’. Several factors are at play, and understanding them can help you make sense of what’s happening on top of your head. 

Learn more about the causes of hair loss in men. 

Genetics

For a start, your DNA has a lot to answer for. If your dad, grandfathers, or uncles — on either side of your family — experienced hair loss, there’s a good chance you will too. 

This theory has been confirmed many times in studies, including an Australian study from the University of Melbourne, which found that 81.5% of balding sons had fathers with significant balding. 

The same study found that men who go bald tend to have a specific version of an androgen receptor (AR) gene found on the X chromosome. This gene determines how sensitive you are to a hormone called dihydrotestosterone (DHT). 

But here’s the thing:

It’s not as simple as inheriting a ‘bald gene’. Some men have this gene without experiencing any hair loss at all, which means other factors are also at play.

Hormones

DHT is like a more aggressive testosterone. In fact, that’s where it comes from. Some testosterone converts to DHT in the body, which binds to hair follicles. 

And if your hair follicles are genetically sensitive to this hormone, DHT can shrink them.

Learn more about hormonal hair loss.

Over time, those follicles lose their ability to produce thick, healthy strands of hair. Instead, it becomes whispier and weaker until the follicle stops producing any hair at all. 

And that brings us to the next factor —

Age

As you get older, more hair follicles will fall victim to DHT, shrinking and producing thinner, weaker hair. 

This is the cause of the most common type of male hair loss: male pattern baldness (also known in medical circles as androgenetic alopecia). 

Male pattern baldness can begin as early as your late teens or early twenties, though it typically becomes more noticeable in your thirties and beyond. 

Learn more about when men start to lose their hair.

Stress

Stress-related hair loss is usually triggered by a severely stressful event, such as a major surgery, excessive weight loss, or a high fever or illness. 

It can also be caused by an intense emotional trauma, such as job loss, divorce, a death in the family, or prolonged chronic stress.

But stress doesn’t cause male pattern baldness. It causes a type of hair loss called telogen effluvium, with diffuse thinning all over the scalp, rather than a receding hairline or balding crown. 

That doesn’t mean hormones don’t have a role in stress-related hair loss.

When you’re stressed, your body gets a big boost of cortisol, which breaks down natural skin substances that are essential for hair follicle health, according to research conducted by Dr Erling Thom, Founder of the World Hair Council. This forces follicles to shed hair prematurely.

According to Harvard’s The Nutrition Source, stress also impacts your body’s nutritional levels, contributing to a nutritional deficiency that may trigger hair loss. 

Diet

Your follicles need proper nutrients to produce strong, healthy hair, so it’s natural that anything upsetting your body’s nutritional balance may cause hair loss. 

Poor nutrition, crash diets, and medical conditions top that list — anything that affects your body’s ability to absorb essential vitamins and minerals, causing a nutritional deficiency. 

When your body has limited resources, it prioritises where they go — and since hair is almost purely cosmetic, your follicles are among the first to miss out on essential nutrients. 

Learn more about nutritional deficiencies and hair loss. 

Medical Conditions

We mentioned it above: medical conditions can wreak havoc on your follicles for a whole range of reasons. 

Let’s start with the fact that some medical conditions, like thyroid disorders or autoimmune disease, disrupt the hormonal balance in your body, sending your hair growth cycle off-kilter. 

Certain bowel diseases can also affect your body’s ability to absorb the protein, vitamins, and minerals hair follicles need to thrive. 

Lastly, there’s medication. A range of medications, including some blood thinners, antidepressants, and blood pressure medications, have hair loss listed among their side effects. 

Looking for something else?

Is It Normal to Lose Hair in Your 20s or 30s? 

Short answer: Absolutely. If you’re experiencing hair loss in your twenties or thirties, you’re no rare medical case. It happens to many men just like you. 

Male pattern baldness can start as early as the late teens, with about 20% of men in their twenties showing some signs of hair loss, according to Healthdirect

By 30, that number jumps to around 30%, and it continues to increase with each decade. 

THE AVERAGE AGE OF HAIR LOSS IN MEN
Age Percentage of men with hair loss
20 20%
30 30%
40 50%
70 80%

 

But why do men lose hair in their 20s, or 30s, or even later in life? 

It mostly comes down to that sensitivity to DHT we mentioned above. Just as some men’s hair follicles are more sensitive to DHT, for some men, this sensitivity can manifest early in life. 

But here’s the silver lining: 

Discovering hair loss early in your twenties or thirties gives you the best chance of preserving your hair. 

With the right treatment, we can often revive hair follicles that are just starting to ‘miniaturise’ or shrink because of DHT. But once a follicle has been dormant for years, it becomes much harder to re-stimulate. 

If you’ve already noticed your hair thinning in your 20s, you’re in luck — you’ve spotted it early! Early intervention with proven treatments can slow down the process and, in many cases, help regrow the hair you’ve lost. 

Understanding Male Pattern Baldness (Androgenetic Alopecia)

Male pattern baldness (or androgenetic alopecia) accounts for about 95% of all male hair loss, making it by far the most common type of hair loss. 

Androgenetic alopecia is caused by a combination of genetics (androgen sensitivity) and hormones (specifically DHT). 

It’s all in the name: ‘andro’ refers to male hormones, ‘genetic’ points to hereditary factors, and ‘alopecia’ simply means hair loss.

Here’s how it typically unfolds:

DHT binds to receptors in hair follicles, particularly those on the crown and at the temples. 

Over time, this causes the follicles to shrink in a process called miniaturisation. As follicles get smaller, they produce thinner, shorter, and weaker hair. Eventually, they stop producing hair altogether.

The pattern is usually predictable — so formulaic, in fact, that we can often forecast the stages of male hair loss

It usually starts with a receding hairline at the temples, creating the classic ‘M’ shape, or with thinning at the crown (the infamous ‘bald spot’). 

Unfortunately, androgenetic alopecia is progressive. Without intervention, it continues to advance over time. But this type of hair loss responds well to treatment, especially when caught early and especially when the treatment is personalised. 

This is where The Hairy Pill®’s approach comes in. 

The tailored men’s hair loss treatment considers your specific pattern of hair loss, rate of progression, and individual response to ingredients, which can make all the difference. 

Why Do Some Men Not Lose Their Hair?

Any comparison of actors like George Clooney and Patrick Stewart will have you asking: Why do some men not lose their hair while others start thinning in their twenties?

The answer lies mainly in the DNA. 

Men who keep their hair throughout their lives typically have a better genetic resistance to DHT. 

While they produce the same hormones as men who experience hair loss, and they often even have the same AR genes that predispose men to balding, their follicles don’t respond to DHT in the same way. 

It’s like allergies: Some people can coast through an Australian spring without a sneeze, while others start reacting the moment the wattle starts to bloom. 

It’s the same with this hormonal sensitivity. DHT affects people in completely different ways, based on their genetic makeup. 

But it isn’t quite as simple as winning or losing the genetic lottery. Some lifestyle and environmental factors might play a supporting role in hair loss. 

Men may have a slight advantage if they maintain lower stress levels, eat nutrient-rich diets, don’t smoke, and take good care of their overall health. 

But don’t underestimate the role of your genes. You could live the healthiest lifestyle in the world and still experience some degree of hair loss if you’ve inherited DHT-sensitive follicles. 

When Hair Loss Might Be a Sign of Something Else

While male pattern baldness accounts for the vast majority of male hair loss cases, it’s not the only cause. Sometimes, hair loss can signal an underlying health issue that needs medical attention.

This might include:

  • Autoimmune conditions — such as alopecia areata, which causes patchy, circular bald spots)
  • Thyroid disorders — such as hyperthyroidism or hypothyroidism, which can cause diffuse hair loss all over the scalp. Learn more about thyroid disease and hair loss. 
  • Nutritional deficiencies — such as iron, zinc, or protein deficiency, which is more common in men who have undergone rapid weight loss, follow very restrictive diets, or have absorption issues. Learn more about nutritional deficiency hair loss. 
  • Medication side effects — including those from antidepressants, blood thinners, beta blockers, and even some acne treatments.

 

Signs of an underlying medical condition causing hair loss
Symptoms of androgenetic alopecia Symptoms of an underlying health condition
Gradual thinning over months or years Sudden hair loss over weeks 
Receding hairline  Diffuse thinning all over the scalp
Thinning crown Body hair loss, as well as scalp hair loss
Hair loss on the scalp only Hair loss doesn’t follow the typical pattern of male pattern baldness
Accompanying symptoms like itching, burning, or scalp irritation

 

If you’re experiencing any of these symptoms, it’s worth consulting with a healthcare professional to rule out underlying conditions. 

The Hairy Pill® has a doctor-led approach, which provides you with medical oversight as well as a personalised hair loss treatment. 

What Men Can Do About Hair Loss 

Male hair loss may be common, but that doesn’t mean it’s untreatable. Proven, effective treatments are available, and the earlier you start, the better your results may be. 

The first step is to start tracking your hair changes. Document your hair loss journey with photos taken in consistent lighting and from the same angles. This helps you and your doctor track progression and see how effective your treatment is. 

The next step is to get a proper diagnosis. A qualified doctor can look at your photos, assess your hair, run any necessary tests, and determine what type of hair loss you’re experiencing. 

They can also rule out any underlying health issues and recommend the most appropriate treatment for your situation. 

The most effective treatments for male pattern baldness work by either blocking DHT production (like finasteride) or stimulating blood flow to hair follicles (minoxidil). 

But these treatments can be generic. 

A standard dose of minoxidil or finasteride might work for some men but not others, and there’s little room for customisation based on your response or side effects. 

That’s where The Hairy Pill® is different. 

It offers you a personalised, medical-grade treatment plan, compounded specifically for you and adjustable based on your body’s response to it. 

To give your hair the best chance, consider addressing lifestyle factors as well to support overall hair health. This includes:

  • Managing stress through exercise, meditation, or other stress reduction techniques
  • Eating a balanced diet rich in protein, vitamins, and minerals
  • Getting adequate sleep (7–8 hours)
  • Avoiding harsh hair treatments or excessive heat styling

Read about 6 lifestyle changes for healthy hair growth.

How The Hairy Pill® Supports Hair Regrowth and Hair Loss Prevention 

Instead of gambling with generic, off-the-shelf hair growth masks, sprays, and serums, consider a personalised treatment plan backed by ongoing practitioner support. 

The Hairy Pill® provides a truly personalised treatment plan that uses underlying technology developed by Professor Rodney Sinclair, Australia’s leading hair loss expert, with over 30 years of experience in the field.

The Hairy Pill® is no one-size-fits-all solution. Every treatment begins with an assessment of your specific hair loss pattern, medical history, and treatment goals — easily completed online.  

Based on this information, a qualified medical practitioner will recommend your personalised treatment, a custom formulation from over 650 possible ingredient and dose combinations.

This isn’t about tweaking a standard formula for male pattern baldness. It’s about creating a treatment that’s built specifically for your body’s needs. Ongoing consultations make it easy to adjust your treatment as needed.

Treatment can be delivered directly to your door, just when you need it, and paused, delayed, or cancelled whenever you choose. 

Importantly, we recognise that hair growth is a journey, not a race, ensuring you have the support you need for long-term results. Take the quiz to find out if you’re eligible.

Final Thoughts: Taking Control of Your Hair Loss Journey 

Just as it’s good to understand why men lose hair, it’s important to remember that male hair loss is common, manageable, and, more often than not, entirely treatable. 

Hair regrowth requires patience and consistency, but with the right approach and medical support, many men see significant improvements in their hair thickness, coverage, and overall confidence. 

And with advances in personalised hair loss treatments like The Hairy Pill®, you have more control over your hair loss journey than ever before. It’s never too early or too late to explore your options.

Learn more about men’s hair loss

When do men start losing their hair and how fast does it happen?
Is hair loss genetic in men?
Can hair loss be reversed?
Can you make your hair grow faster?
How much hair loss is normal?
What causes hair loss?