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One barber has warmed the internet's hearts today with a beautiful gesture towards his colleague undergoing cancer treatment.

The TikTok video has left many feeling very emotional...

Now, you will all know that, out of all the illnesses in the world, cancer is by far one of the most devastating.

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As a result of the uncontrolled growth of abnormal cells in the body, cancer develops when the body's normal control mechanism stops working.

Instead of old cells dying like they're supposed to...

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They instead mutate, forming new, abnormal cells.

And the treatment is grueling.

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The goal of treatment is to kill as many cancerous cells as possible, all the while avoiding any damage to the normal and healthy cells nearby.

However, this isn't always possible.

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The most common treatment, chemotherapy, acts as a "poison" and kills off the abnormal cells. However, it can often kill normal cells, too, which makes people incredibly ill, resulting in hair loss, weight loss, and general sickness.

Though chemotherapy has been proven to have positive effects on eliminating cancerous cells from the body...

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It isn't a cure... And we are yet to discover one.

We are a long way off from finding an official cure for cancer...

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And the numbers of those being diagnosed with the illness keep on rising every year.

And, out of those diagnosed with the devastating illness...

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Many end up losing their lives.

It's simply devastating.

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Medical researchers have been working hard for decades to find a cure for the illness and, though they haven't found one officially, they have come up with many alternative methods to combat the disease.

But one heartwarming story has broken the internet this week.

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One friend's show of solidarity is enough to restore our faith in humanity.

Neftali Martin was having his head shaved in preparation for his own cancer treatment.

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He was looking visibly shaken as he said goodbye to his hair in Alicante, Spain.

But then the barber did something amazing.

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Turning the clippers on himself.

Watch the heartwarming video here ...

@neftabarber

#noestassolo #cancer #amigosforever #barbero #barber #viral #life @imjooeel @lordsandbarbers

And we have plenty more heartwarming stories - just keep scrolling.