Are Some Hair Follicles Running Out Of Battery?

A fascinating new study suggests some hair-growing cells may age faster than they should

Imagine your phone battery.

When it’s brand new, it lasts all day.

A few years later, it doesn’t.

It still works.

Just not as well.

You find yourself reaching for the charger more often.

A fascinating new study published in 2026 made me wonder whether something similar might happen inside some hair follicles.

Before we go any further, this is not proof that hair loss is caused by a battery problem.

But it is another interesting new clue that may help explain why hair often gets thinner slowly over many years.

Why Doesn’t Hair Loss Happen Overnight?

This is something many people ask.

If male pattern hair loss is linked to DHT, why doesn’t all the hair simply fall out at once?

Hair loss in androgenetic alopecia (male pattern hair loss / female pattern hair loss) is usually slow. Very slow.

A hair follicle might spend years getting weaker.

The hair becomes a little thinner.

Then a little thinner again.

Then thinner again.

By the time someone notices their hairline changing or their crown thinning, the process may have been happening quietly for years.

This new study may help explain part of the reason why.

The Tiny Cells That Help Grow Hair

At the bottom of every hair follicle are special cells that help control hair growth in a part of the follicle called the dermal papilla.

You don’t need to remember their name.

Just think of them as the follicle’s control centre.

These cells help decide:

• How thick your hair grows

• How long it grows for

• When it grows

• When it rests

  
  

If these cells stay healthy, the hair follicle usually works well. If they start to struggle, the hair follicle over all can struggle too.

What Did The Scientists Find?

The researchers looked at scalp tissue from people with male and female pattern hair loss.

They found evidence that some of the important hair-growing cells were ageing faster than they should.

Scientists call this cellular senescence.

What it really means is:

The cells are getting old and tired before they should.

The cells were still alive.

But they weren’t working properly anymore.

Could Some Hair Follicles Have A Battery Problem?

This was the part I found most interesting.

Inside every cell are tiny structures called mitochondria.

You can think of them as tiny batteries.

Their job is to help the cell make energy.

In this study, the researchers found evidence that these tiny batteries weren’t working properly in some hair-growing cells affected by DHT.

The cells seemed to be running low on charge.

They looked stressed.

They behaved more like old cells than healthy young ones.

This doesn’t mean hair loss is caused by a flat battery.

But it does raise an interesting possibility.

What if part of male pattern hair loss happens because some hair-growing cells gradually lose their ability to hold charge and do their job properly?

Not suddenly.

Slowly.

Like our phones.

A New Clue

The scientists also identified a molecule called ACOD1. When levels of ACOD1 dropped, the hair-growing cells seemed to age faster and their tiny batteries worked less well.

This does not mean ACOD1 is a treatment for hair loss. But it gives researchers another clue about what may be happening inside thinning hair follicles. Like many good studies, this research answers some questions while raising new ones.

A Thought I Had While Reading This Paper

This next bit is my own theory, not something the researchers said.

The study found that some hair follicle cells seemed to have problems with their mitochondria. The mitochondria are like tiny batteries of the cell.

That got me thinking about low-level laser therapy (LLLT).

One of the theories behind LLLT is that it helps mitochondria work better.

So if some hair follicles are struggling because their batteries aren’t working properly, could that be one reason why some people respond to laser therapy?

I don’t know.

This study didn’t look at laser therapy, so we definitely can’t use it as proof.

But I do think it’s an interesting idea and exactly the sort of question future research may help answer.

Does This Change Treatment Today?

No.

This study has not created a new treatment.

And it certainly does not prove that hair loss is caused by a battery problem.

What it does do is help scientists understand what might be happening inside a thinning hair follicle.

Every new piece of the puzzle helps.

Why I Wanted To Share This Study

One reason I found this paper so interesting is that it offers a possible explanation for something many people notice.

Hair loss is usually slow.

A follicle might produce thinner and thinner hairs over many years before baldness becomes obvious.

This study suggests that part of that process may be caused by hair-growing cells gradually becoming old, tired and less able to do their job.

Most people think of male pattern hair loss as simply a hormone problem.

This research reminds us that the story may be more complicated than that. DHT might not damage hair follicles in one big hit. Instead, it may slowly wear them down over time.

For now, this is early research.

But it provides a fascinating glimpse into what may be happening beneath the surface long before someone notices their hair getting thinner.

Reference

Zhao M, Wu Q, Ding Y et al. ACOD1 deficiency promotes DDX1 methylation-mediated mitochondrial dysfunction and dermal papilla cell senescence in androgenetic alopecia. BMC Medicine. 2026.

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Authored by Dr Gwen Adey

First published: 13/06/2026

Medical Disclaimer

This article is intended for educational purposes only and should not be taken as individual medical advice. If you are experiencing hair loss, speak to a suitably qualified healthcare professional.