Why is my Hair Thinning? 7 Common Causes I See In Clinic in Dungarvan

Noticing changes in your hair can be upsetting. Whether you've seen more hair than usual on your brush, your parting seems wider, or your hair simply doesn't feel as thick as it once did, it's natural to feel concerned and start looking for answers.

Hair thinning is one of the most common concerns that clients contact me about, and it can have a huge impact on confidence. Many people tell me they spend months worrying about it before reaching out for help.

The good news is that hair thinning is often linked to an underlying cause, and understanding that cause is the first step towards finding the right solution.

Here are seven of the most common reasons for hair thinning that I see in clinic:

1. Stress 

We've all heard the saying that stress can "make your hair fall out", and there is actually some truth to it.

Periods of significant stress, anxiety, illness, bereavement, relationship difficulties, or major life changes can trigger a type of hair shedding called Telogen effluvium.

What can be confusing is that the hair loss often doesn't happen immediately. Many people notice increased shedding two to three months after the stressful event.

The reassuring news is that this type of hair loss is often temporary, although recovery can take several months.

2. Hormonal Changes

Hormones play a major role in hair growth. Many women notice changes in their hair during:

• Pregnancy

• After childbirth

• Perimenopause

• Menopause

• Changes in contraception

• Certain medical conditions affecting hormone levels

As hormone levels fluctuate, hair can become finer, weaker, and less dense over time.

3. Genetics

Sometimes hair thinning runs in families.

Female pattern hair loss is incredibly common and can develop gradually over many years. Rather than losing hair in patches, many women notice widening of the parting, reduced volume, or thinning around the crown.

Because this type of hair loss tends to develop slowly, many people don't realise how much density they have lost until they compare older photographs.

4. Nutritional Deficiencies

Healthy hair requires the right nutrients to grow.

Low levels of iron, vitamin D, vitamin B12, and other essential nutrients can contribute to hair thinning and excessive shedding.

This is one reason why it's important not to assume every case of hair loss has the same cause. Sometimes a simple blood test can provide valuable answers.

5. Weight Loss and Dieting

Rapid weight loss can place stress on the body and affect the normal hair growth cycle.

Whether weight loss is achieved through dieting, illness, surgery, or medication, the body may temporarily redirect its energy towards more essential functions, causing increased hair shedding.

6. Illness and Recovery

Many people experience hair shedding after illness.

Viral infections, surgery, high fevers, and significant physical stress can all trigger temporary hair loss. Again, this often appears several weeks or months after the event, making it difficult to connect the two.

In many cases, hair growth gradually returns once the body has recovered.

7. Ageing and Reduced Hair Density

As we get older, our hair naturally changes.

Hair follicles can become less active, individual hairs may become finer, and overall density may reduce. This is a normal part of ageing, but that doesn't mean you have to simply accept it if it is affecting your confidence.

There are now treatments available that can help stimulate the scalp and support healthier hair growth.

When Should You Seek Advice?

If you have noticed:

• Increased hair shedding

• A widening parting

• Reduced volume

• Thinning around the crown

• Changes that have persisted for several months

it may be worth seeking professional advice. Hair thinning is often easier to manage when addressed early, rather than waiting until significant density has been lost.

Can PRP Help With Hair Thinning?

Platelet-Rich Plasma (PRP) is a treatment that uses components from your own blood to stimulate the scalp and support hair growth.

It is commonly used for certain types of hair thinning and may help improve hair quality, thickness, and density in suitable candidates.

However, no treatment is right for everyone, which is why a thorough consultation is always the first step. Understanding why your hair is thinning helps determine the most appropriate treatment plan.

A Final Thought

One thing I always tell my clients is this: try not to panic.

Hair thinning can feel overwhelming, and it's easy to fall down an internet rabbit hole searching for answers. The reality is that many different factors can contribute to hair loss, and identifying the cause is often the key to moving forward.

If you're concerned about changes in your hair, you're not being vain, and you're certainly not alone. Hair plays a huge role in how we feel about ourselves, and it's completely understandable to want answers and support.

The first step is understanding what's happening, and from there, we can explore the options available to help.