Smartphones may be ruining the sleep of UK teenagers

A University of Hertfordshire academic found that the blue light emitted from smartphones and tablets affected sleep quality

Many a teenager lies in bed texting and checking their social media accounts on their smartphone or tablet before going to sleep each night - but the habit could play havoc with a good night’s rest.

More than nine out of ten young people expose themselves to the blue light emitted from these devices, causing problems with sleep, a new survey has found.

The survey also showed  that more than 28 million people in the UK regularly get no more than seven hours sleep a night, BBC Newsbeat reported.

Professor Richard Wiseman, who commissioned the YouGov poll described the findings as “extremely worrying”.

More than three-quarters (78 per cent) of the 2,149 adults questioned said they used electronic devices before going to bed.

This rose to 91 per cent among the 18 to 24-year-olds questioned in the survey.

 

The University of Hertfordshire academic told BBC Newsbeat: “The blue light from these devices suppresses the production of the sleep-inducing hormone melatonin, so it's important to avoid them before bed time.”

Adults are generally thought to require a minimum of seven to eight hours of sleep a night, while guidelines recommend about nine hours a night for teenagers.

The proportion of people thought to be getting too little sleep had risen by a fifth since a ”bedroom poll“ conducted last year by the National Sleep Foundation.

"This is a huge rise, and the results are extremely worrying because getting less than seven hours sleep a night is below the recommended guidelines, and is associated with a range of problems, including an increased risk of weight gain, heart attacks, diabetes and cancer," Professor Wiseman said.

In the survey, people were asked if they used a computer, tablet or smartphone during the two hours before they went to bed. They were also asked about their dreams – just one in ten agreed with the statement: “I would describe my dreams as pleasant.”

The findings come as a survey of 2,000 people suggested that under-25s check their phones 32 times a day.

Life and Style
ebookNow available in paperback
ebooks
ebookA delicious collection of 50 meaty main courses
Latest stories from i100
Have you tried new the Independent Digital Edition apps?
SPONSORED FEATURES

ES Rentals

    Independent Dating
    and  

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

    iJobs Job Widget
    iJobs General

    Recruitment Genius: Trainee Health & Safety Consultant

    £16000 - £20000 per annum: Recruitment Genius: A fantastic and exciting opport...

    Recruitment Genius: Project and Quality Manager

    £28000 - £32000 per annum: Recruitment Genius: This company is an independent ...

    Recruitment Genius: Trainee Sales Executive - OTE £20,625

    £14625 - £20625 per annum: Recruitment Genius: This role is for an enthusiasti...

    Guru Careers: Financial Controller

    £45 - £55k DOE: Guru Careers: A Financial Controller is required to join a suc...

    Day In a Page

    Mullah Omar, creator of the Taliban, is dead... for the fourth time

    Mullah Omar, creator of the Taliban, is dead... again

    I was once told that intelligence services declare their enemies dead to provoke them into popping up their heads and revealing their location, says Robert Fisk
    Margaret Attwood on climate change: 'Time is running out for our fragile, Goldilocks planet'

    Margaret Attwood on climate change

    The author looks back on what she wrote about oil in 2009, and reflects on how the conversation has changed in a mere six years
    New Dr Seuss manuscript discovered: What Pet Should I Get? goes on sale this week

    New Dr Seuss manuscript discovered

    What Pet Should I Get? goes on sale this week
    Oculus Rift and the lonely cartoon hedgehog who could become the first ever virtual reality movie star

    The cartoon hedgehog leading the way into a whole new reality

    Virtual reality is the 'next chapter' of entertainment. Tim Walker gives it a try
    Ants have unique ability to switch between individual and collective action, says study

    Secrets of ants' teamwork revealed

    The insects have an almost unique ability to switch between individual and collective action
    Donovan interview: The singer is releasing a greatest hits album to mark his 50th year in folk

    Donovan marks his 50th year in folk

    The singer tells Nick Duerden about receiving death threats, why the world is 'mentally ill', and how he can write a song about anything, from ecology to crumpets
    Let's Race simulator: Ultra-realistic technology recreates thrill of the Formula One circuit

    Simulator recreates thrill of F1 circuit

    Rory Buckeridge gets behind the wheel and explains how it works
    Twitter accused of 'Facebookisation' over plans to overhaul reverse-chronological timeline

    Twitter accused of 'Facebookisation'

    Facebook exasperates its users by deciding which posts they can and can’t see. So why has Twitter announced plans to do the same?
    Jane Birkin asks Hermès to rename bag - but what else could the fashion house call it?

    Jane Birkin asks Hermès to rename bag

    The star was shocked by a Peta investigation into the exotic skins trade
    10 best waterproof mascaras

    Whatever the weather: 10 best waterproof mascaras

    We found lash-enhancing beauties that won’t budge no matter what you throw at them
    Diego Costa biography: Chelsea striker's route to the top - from those who shared his journey

    Diego Costa: I go to war. You come with me...

    Chelsea's rampaging striker had to fight his way from a poor city in Brazil to life at the top of the Premier League. A new book speaks to those who shared his journey
    Ashes 2015: England show the mettle to strike back hard in third Test

    England show the mettle to strike back hard in third Test

    The biggest problem facing them in Birmingham was the recovery of the zeitgeist that drained so quickly under the weight of Australian runs at Lord's, says Kevin Garside
    Women's Open 2015: Charley Hull - 'I know I'm a good golfer but I'm also just a person'

    Charley Hull: 'I know I'm a good golfer but I'm also just a person'

    British teen keeps her feet on ground ahead of Women's Open
    Turkey's conflict with Kurdish guerrillas in Iraq can benefit Isis in Syria

    Turkey's conflict with Kurdish guerrillas in Iraq can benefit Isis in Syria

    Turkish President Erdogan could benefit politically from the targeting of the PKK, says Patrick Cockburn
    Yvette Cooper: Our choice is years of Tory rule under Jeremy Corbyn or a return to a Labour government

    Our choice is years of Tory rule under Corbyn or a return to a Labour government

    Yvette Cooper urged Labour members to 'get serious' about the next general election rather than become 'a protest movement'