A saliva sample can determine a person’s age to within five years
2011 06 23
Saliva contains the genetic secrets of a person’s age, according to researchers.
Analysing a saliva sample can determine an individual’s age to within five years, a study claims.
The U.S. discovery could help crime scene investigations and the development of personalised medicine.
Lead researcher Eric Vilain, from the University of California, Los Angeles, said: ’Our approach supplies one answer to the enduring quest for reliable markers of ageing.
’With just a saliva sample, we can accurately predict a person’s age without knowing anything else about them.’
The technique depends on a natural process called methylation which modifies the building-block chemicals which make up DNA. Methylation patterns shift with age, altering DNA and contributing to age-related diseases.
The scientists identified 88 DNA sites which strongly correlated methylation to age.
These were then narrowed down to just two genes which had the most powerful age-related links to methylation.
A test based on these two genes made it possible to predict a person’s age to within five years.
Dr Sven Bocklandt, a former UCLA genticist now with biotech company Bioline and co-author of the study, said: ’Methylation’s relationship with age is so strong that we can identify how old someone is by examining just two of the three billion building blocks that make up our genome (genetic code).’
The test could be developed into a forensic tool for crime investigators, said the scientists.
By analysing traces of saliva left in a tooth bite or on a coffee cup, experts could get a good idea of a suspect’s age.
The technique could also help the development of treatments tailored to a patient’s ’biological age’.
In a minority of the population, methylation does not correlate with chronological, or ’birthday’, age. Using the saliva test to assess the ’bio-age’ of these individuals would help physicians evaluate their risk of age-related diseases.
’Doctors could predict your medical risk for a particular disease and customise treatment based on your DNA’s true biological age, as opposed to how old you are,’ said Professor Vilain.
’By eliminating costly and unnecessary tests, we could target those patients who really need them.’
The research is published in the online journal Public Library of Science ONE.
rticle from: dailymail.co.uk
We’re All Mutants: The Average Human Has 60 New Genetic Mutations
A simple blood test that tells you how long you’ll live
Parents want child gene tests
Latest News from our Front Page
Pre-historic tokens used in conjunction with cuneiform
2014 07 22
An archaeological dig in southeast Turkey has uncovered a large number of clay tokens that were used as records of trade until the advent of writing, or so it had been believed. But a new find of tokens, dates from a time when writing was commonplace – thousands of years after it was previously assumed this technology had become obsolete.
Are immigration opponents Nazis?
2014 07 22
It seems the usual suspects are calling anyone who opposes unlimited immigration to be a "Nazi". The Left seems to be in constant fear of "Nazis" that lurk in public policy discussions and I assume under their beds. If you oppose any Leftist position, you are a.... take a wild guess...wait for it.... a NAZI! Tim Wise recently went ...
What Did US Spy Satellites See in Ukraine?
2014 07 22
Exclusive: The U.S. media’s Ukraine bias has been obvious, siding with the Kiev regime and bashing ethnic Russian rebels and Russia’s President Putin. But now – with the scramble to blame Putin for the Malaysia Airlines shoot-down – the shoddy journalism has grown truly dangerous, says Robert Parry.
In the heat of the U.S. media’s latest war hysteria – rushing to ...
Oh, Great: Robots Are Set to Conduct National Security Clearance Interviews
2014 07 22
Advancing a career in the US government might soon require an interview with a computer-generated head who wants to know about that time you took ketamine.
Psychologists at the National Center for Credibility Assessment (NCCA) are developing an interview system that uses a responsive on-screen avatar for the first stage of the national security clearance process.
Initial screening for a variety ...
Is Anything on the Internet Real Anymore?
2014 07 22
Is there anybody…out there?
I promise I’m a real person asking this question and typing this article…but beyond that, I can’t promise much else about anything you or I see on the Internet.
This article on ZDNet, “GCHQ’s dark arts: Leaked documents reveal online manipulation, Facebook, YouTube snooping,” confirms — beyond a shadow of any possible doubt — that a barrage of ...
|More News » |