This is your life: blood test that reveals your destiny

A simple blood test could predict how long you will live by measuring the "fuse" on the end of your body's DNA.

A simple blood test could predict how long you will live by measuring the "fuse" on the end of your body's DNA.

New research by American scientists on 20-year-old blood samples has found a strong link between the length of a stretch of DNA called the telomere, found at the tips of all 26 chromosomes in a cell, and the likelihood of living for 15 or more years after 60.

Every time the cell divides, the telomere shortens by a set length; when it cannot shorten any more, the cell dies. In humans, only cancer cells, sperm and eggs do not "burn down" their telomeres. People over 60 with shorter telomeres were nearly twice as likely as others to die over the next 15 years or so, especially from heart disease or pneumonia.

The test, which can produce a result in less than six hours from one drop of blood, could revolutionise the life insurance and health industries.

But Richard Cawthon, the scientist who led the project, fears that if telomere length turns out to be a reliable predictor of lifespan from an early age, people could be turned down for insurance or charged more for health care.

"In the UK nobody would deny you coverage because you've got the National Health Service," said Dr Cawthon, of the human genetics department at the University of Utah. "I wish it were like that here in the US – life or healthcare insurers might ask you to take a telomere test before they would give you coverage."

Professor Rob Newbold, a cancer specialist at the University of Brunel who specialises in telomere studies, said: "It's the sort of statistic that makes your ears prick up.

"Short telomeres do predispose to chromosome fusions and genetic instability. As the individuals aged, one might expect a disproportionate increase in death through cancer, for example, in those that had shorter telomeres at age 60."

Other scientists said that the sample was too small to draw definitive conclusions but that they would be interested to see wider studies.

The Utah team's report in today's Lancet shows an analysis of the telomeres from blood samples collected 20 years ago by people for genetic studies, and then followed up to see how long they had survived. The telomeres ranged in length from 1,930 to 4,310 "base pairs" of DNA; each year, that shortened by about 14 base pairs.

Intriguingly, women, who tend to live longer than men, had telomeres about 3.5 per cent longer than men of the same age.

Start your day with The Independent, sign up for daily news emails
News
Ben Little, right, is a Labour supporter while Jonathan Rogers supports the Green Party
general election 2015
News
The 91st Hakone Ekiden Qualifier at Showa Kinen Park, Tokyo, 2014
news
Life and Style
Former helicopter pilot Major Tim Peake will become the first UK astronaut in space for over 20 years
food + drinkNothing but the best for British astronaut as chef Heston Blumenthal cooks up his rations
News
Kim Wilde began gardening in the 1990s when she moved to the countryside
peopleThe singer is leading an appeal for the charity Thrive, which uses the therapy of horticulture
Sport
Alexis Sanchez celebrates scoring a second for Arsenal against Reading
football
Life and Style
health
Voices
An easy-peel potato; Dave Hax has come up with an ingenious method in food preparation
voicesDave Hax's domestic tips are reminiscent of George Orwell's tea routine. The world might need revolution, but we like to sweat the small stuff, says DJ Taylor
News
i100
News
Japan's population is projected to fall dramatically in the next 50 years (Wikimedia)
news
Life and Style
Buyers of secondhand cars are searching out shades last seen in cop show ‘The Sweeney’
motoringFlares and flounce are back on catwalks but a revival in ’70s car paintjobs was a stack-heeled step too far – until now
ebooks
ebooksA special investigation by Andy McSmith
  • Get to the point
Latest stories from i100
Have you tried new the Independent Digital Edition apps?
Independent Dating
and  

By clicking 'Search' you
are agreeing to our
Terms of Use.

iJobs Job Widget
iJobs General

Recruitment Genius: Project Implementation Executive

£18000 - £23000 per annum: Recruitment Genius: They work with major vehicle ma...

Recruitment Genius: Chiropractic Assistant

£16500 per annum: Recruitment Genius: A Chiropractic Assistant is needed in a ...

Recruitment Genius: Digital Account Executive - Midlands

£18000 - £26000 per annum: Recruitment Genius: They work with major vehicle ma...

Recruitment Genius: Web Developer

£28000 - £30000 per annum: Recruitment Genius: This company provides coaching ...

Day In a Page

NHS struggling to monitor the safety and efficacy of its services outsourced to private providers

Who's monitoring the outsourced NHS services?

A report finds that private firms are not being properly assessed for their quality of care
Zac Goldsmith: 'I'll trigger a by-election over Heathrow'

Zac Goldsmith: 'I'll trigger a by-election over Heathrow'

The Tory MP said he did not want to stand again unless his party's manifesto ruled out a third runway. But he's doing so. Watch this space
How do Greek voters feel about Syriza's backtracking on its anti-austerity pledge?

How do Greeks feel about Syriza?

Five voters from different backgrounds tell us what they expect from Syriza's charismatic leader Alexis Tsipras
From Iraq to Libya and Syria: The wars that come back to haunt us

The wars that come back to haunt us

David Cameron should not escape blame for his role in conflicts that are still raging, argues Patrick Cockburn
Sam Baker and Lauren Laverne: Too busy to surf? Head to The Pool

Too busy to surf? Head to The Pool

A new website is trying to declutter the internet to help busy women. Holly Williams meets the founders
Heston Blumenthal to cook up a spice odyssey for British astronaut manning the International Space Station

UK's Major Tum to blast off on a spice odyssey

Nothing but the best for British astronaut as chef Heston Blumenthal cooks up his rations
John Harrison's 'longitude' clock sets new record - 300 years on

‘Longitude’ clock sets new record - 300 years on

Greenwich horologists celebrate as it keeps to within a second of real time over a 100-day test
Fears in the US of being outgunned in the vital propaganda wars by Russia, China - and even Isis - have prompted a rethink on overseas broadcasters

Let the propaganda wars begin - again

'Accurate, objective, comprehensive': that was Voice of America's creed, but now its masters want it to promote US policy, reports Rupert Cornwell
Why Japan's incredible long-distance runners will never win the London Marathon

Japan's incredible long-distance runners

Every year, Japanese long-distance runners post some of the world's fastest times – yet, come next weekend, not a single elite competitor from the country will be at the London Marathon
Why does Tom Drury remain the greatest writer you've never heard of?

Tom Drury: The quiet American

His debut was considered one of the finest novels of the past 50 years, and he is every bit the equal of his contemporaries, Jonathan Franzen, Dave Eggers and David Foster Wallace
You should judge a person by how they peel a potato

You should judge a person by how they peel a potato

Dave Hax's domestic tips are reminiscent of George Orwell's tea routine. The world might need revolution, but we like to sweat the small stuff, says DJ Taylor
Beige is back: The drab car colours of the 1970s are proving popular again

Beige to the future

Flares and flounce are back on catwalks but a revival in ’70s car paintjobs was a stack-heeled step too far – until now
Bill Granger recipes: Our chef's dishes highlight the delicate essence of fresh cheeses

Bill Granger cooks with fresh cheeses

More delicate on the palate, milder, fresh cheeses can also be kinder to the waistline
Aston Villa vs Liverpool: 'This FA Cup run has been wonderful,' says veteran Shay Given

Shay Given: 'This FA Cup run has been wonderful'

The Villa keeper has been overlooked for a long time and has unhappy memories of the national stadium – but he is savouring his chance to play at Wembley
Timeless drama of Championship race in league of its own - Michael Calvin

Michael Calvin's Last Word

Timeless drama of Championship race in league of its own