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Home / Lifestyle

Could this drug stop hair going grey?

By Sarah Knapton
Daily Telegraph UK·
1 Mar, 2016 10:30 PM3 mins to read

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Scientists identify the gene that turns every shade to silver and say a drug to stop it can be produced. Photo / Getty

Scientists identify the gene that turns every shade to silver and say a drug to stop it can be produced. Photo / Getty

Since time immemorial the first grey hair has been an unwelcome sign of the passing years.

Disguising its appearance has given rise to an industry of shampoos and dyes and a host of old wives' tales.

But future generations face an altogether brighter prospect, after British scientists identified the gene responsible. They are confident that it will be possible to produce drugs or cosmetics to switch it off.

Grey hair is a result of the depletion of melanin, which is responsible for the pigment in hair, skin and eyes.

It was already known that a gene called IRF4 played a crucial role in hair colour, but researchers at University College London have now, for the first time, linked it to lack of colour.

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"This is the first time a gene for greying has been identified in humans," said Dr Kaustubh Adhikari, of UCL's cell and developmental biology department, the lead author of the study.

"These findings have potential forensic and cosmetic applications ... Preventing grey hair is a possibility and even reversing grey hair might not be impossible."

The team analysed DNA samples from more than 6,600 volunteers recruited in Brazil, Colombia, Chile, Mexico and Peru, including individuals of European, native American and African ancestry, giving a large variation in head hair appearance.

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Visual traits of each individual were compared to analysis of their DNA to identify the genes responsible.

The finding could also ultimately make it possible to change hair or eye colour without using dyes. It could simply become a matter of taking a n enzyme which changed the expression of the related genes, turning blondes into brunettes, preventing grey hair or making brown eyes blue.

The team also identified genes linked to the ability to grow a bushy beard, to eyebrow thickness and likelihood of a monobrow and hair curliness.

The findings could help develop forensic techniques to build a visual profiles based on an individual's genetic make-up, showing for example that a suspect had curly hair.

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New Zealand

'NZ cops target us, call us n*****s'

03 Mar 04:00 PM

The research is published in the journal Nature Communications.

Holding back the years

Efforts to rid heads of grey hairs go way back. Here are just some of the remedies, ancient and modern, suggested by people from around the world.

• Ti root: a plant native to China, taken according to legend by a 9th century villager who restored his black hair and kept it until he died at 130.

• Fingertip rubbing: it is said in India that rubbing the fingertips together stimulates circulation and increases blood to the scalp, reducing grey hair.

• Magnetised water: US chemical engineer Dr John Milewski claimed that drinking magnetised water turned his grey hair dark again.

• Onion juice: smeared on the scalp, it is said to reverse grey hair and stop thinning. The drawbacks are obvious.

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• Various teas, used to rinse the hair: rosemary and sage, sagebrush, and black tea have all been used. A pinch of salt sets the colour.

• Vitiligo cream: suggested in 2013 by Dutch researchers who put greyness down to stress.

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