Common Causes of Hair Loss in Men (UK Guide 2026)

Introduction

Hair loss in men is extremely common, affecting a large percentage of men at some point in their lives. While it can feel concerning, understanding the underlying cause is the first step towards finding the right treatment.

If you're noticing thinning, a receding hairline, or increased shedding, this guide explains the most common causes of hair loss in men — and what you can do about it.

1. Male Pattern Baldness (Most Common Cause)

The most frequent cause of hair loss in men is male pattern baldness, also known as androgenetic alopecia.

This condition is:

• Genetic (runs in families)
• Influenced by hormones, particularly DHT (dihydrotestosterone)
• Progressive over time

Hair loss typically follows a pattern classified using the Norwood Scale, starting with:

• Receding temples
• Thinning at the crown
• Gradual loss of density across the scalp

This type of hair loss is not fully reversible, but it can often be slowed or managed with treatment. For advanced cases, FUE and DHI hair transplants may be appropriate options.

2. Stress-Related Hair Loss (Telogen Effluvium)

Stress can trigger a temporary form of hair loss known as telogen effluvium.

Common triggers include:

• Physical illness or surgery
• Emotional stress
• Rapid weight loss
• Major life changes

This causes more hairs than usual to enter the shedding phase.

The good news: this type of hair loss is usually temporary, and hair often regrows once the trigger is resolved.

3. Nutritional Deficiencies

Your hair relies on proper nutrition to grow and remain healthy.

Deficiencies in the following can contribute to hair thinning:

• Iron
• Vitamin D
• Zinc
• Protein

This type of hair loss is often diffuse, meaning it affects the entire scalp rather than specific areas like the hairline or crown.

4. Hormonal Imbalances

Hormones play a key role in regulating hair growth.

In men, imbalances may be linked to:

• Thyroid disorders
• Changes in testosterone levels
• Other endocrine conditions

These can disrupt the hair growth cycle and lead to increased shedding or thinning.

5. Medical Conditions

Certain medical conditions can cause hair loss, including:

• Autoimmune conditions (e.g. alopecia areata)
• Scalp infections
• Chronic illnesses

In these cases, hair loss may appear suddenly or in patches.

6. Medications and Treatments

Some medications can lead to hair loss as a side effect.

These may include:

• Antidepressants
• Blood pressure medication
• Steroids
• Chemotherapy (in more severe cases)

Hair loss from medication is often temporary, but should always be discussed with a healthcare professional.

7. Lifestyle Factors

Everyday habits can also impact hair health.

Contributing factors include:

• Smoking
• Poor diet
• Lack of sleep
• Chronic stress

While these may not directly cause baldness, they can accelerate thinning or worsen existing hair loss.

How to Identify Your Type of Hair Loss

Understanding your pattern is key. Ask yourself:

• Is your hairline receding?
• Is your crown thinning?
• Are you shedding more than usual?
• Is the thinning localised or across the whole scalp?

Different patterns often indicate different causes, which is why a professional assessment is important.

Treatment Options for Hair Loss in Men

Treatment depends on the cause. Options may include:

• Medical therapy to slow or stabilise hair loss
• Topical or oral treatments tailored to your condition, such as Restore+
• Hair transplant surgery for advanced or permanent hair loss

Early intervention can often lead to better long-term outcomes.

When Should You Seek Advice?

You should consider a consultation if:

• Hair loss is progressing
• You notice visible thinning or recession
• You're unsure of the cause
• You want to explore treatment options

Our Approach at Monarch Hair Transplant Clinic

At our clinic in Chester, we provide personalised hair loss assessments based on your individual pattern and goals.

We regularly treat patients from:

• Chester
• Ellesmere Port
• Liverpool
• Manchester

Our focus is on:

• Identifying the root cause
• Creating a tailored treatment plan
• Providing long-term solutions

Final Thoughts

Hair loss in men can be caused by a variety of factors — from genetics to lifestyle.

The key is not to ignore the early signs. With the right approach, it is often possible to:

• Slow progression
• Improve hair health
• Restore density where appropriate