World Bulletin / News Desk
Smokers may get fewer hours of sleep and have less restful slumber than non-smokers, according to a German study that looked at more than two thousand people.
Researchers whose work appeared in the journal Addiction Biology found that of nearly 1,100 smokers surveyed, 17 percent got fewer than six hours of sleep each night and 28 percent reported "disturbed" sleep quality.
That compared with rates of seven percent and 19 percent respectively among more than 1,200 non-smokers who were also surveyed, said lead researcher Stefan Cohrs, of Charite Berlin medical school in Germany.
"This study demonstrates for the first time an elevated prevalence of sleep disturbance in smokers compared with non-smokers in a population without lifetime history of psychiatric disorders even after controlling for potentially relevant risk factors," Cohrs and his colleagues wrote.
The findings cannot prove that smoking directly impairs sleep, since smokers may have other habits that could affect their shut-eye such as staying up late to watch TV or getting little exercise, Cohrs told Reuters Health in an email.
But there is also reason to believe the stimulating effects of nicotine may be to blame.
"If you smoke and you do suffer from sleep problems, it is another good reason to quit smoking," Cohrs said.
Poor sleep quality may not only make your waking hours tougher. Some studies have also linked habitually poor sleep to health problems like obesity, diabetes and heart disease.
The study included 1,071 smokers and 1,243 non-smokers who were free of mental health disorders, since those conditions may make a person both more likely to smoke and more vulnerable to sleep problems.
The researchers used a questionnaire that gauges sleep quality. Overall, more than one-quarter of smokers had a score than landed them in the category of "disturbed" sleep, meaning they had a high probability of insomnia.
Many things can affect sleep quality, and Cohrs's team was able to account for factors such as age, weight, and alcohol abuse. Yet smoking was still linked to poorer sleep quality.
It's still possible there are other things about smokers that impair their sleep, but Cohrs said he thinks the most likely culprit is nicotine - and the prospect of better sleep could provide smokers with an additional reason to quit.
This basically means the brain's 'muscles' are stronger and their brains are better able to function in spite of injury, say U.S researchers
Most of the U.S. measles cases are linked to unvaccinated travelers from abroad, the Centers for Disease Control and Prevention (CDC) said.
Dr Ender Karaca, a post-doctoral associate in the department of molecular and human genetics at Baylor, first encountered the disorder in 2006 and 2007 during his residency training as a clinical geneticist in Turkey.
A routine inspection at a slaughterhouse in Mato Grosso state found an animal that veterinarians suspect of having a neurological problems
Public concern has been heightened by the spread of rumours on social media that there were many undiagnosed cases, as well as accusations of government cover-ups and inadequate hygiene procedures
The long-awaited proposal would subject the $2 billion e-cigarette industry to federal regulation for the first time.
Scientists are especially interested in this iceberg not only because of its size but because it originated in an unexpected location
About 15 percent of world's children going without vaccinations, says WHO's Director of Immunization Dr. Okwo-Bele
The weeklong campaign will target seven of South Sudan's ten states.
The latest cases bring the total number of confirmed cases in the kingdom to 272, of whom 81 have died.
In a survey conducted last year, most water analyzed was deemed to be "very poor" or "relatively poor" in standard and cannot be used for drinking purposes.
Poaching rhinos for their horns is a growing problem in South Africa and a lucrative business for organised criminal networks but it is unusual for thieves to target stock piles.
The 17 new cases, announced late on Monday on the Health Ministry website, bring the total number of Saudi infections to 261, of whom 81 have died
The amendments, now in their fourth draft, are expected to enshrine environmental protection as the overriding priority of the Chinese government
In 2008, the Zambian government banned smoking in public places, relying on state police to enforce the prohibition.
Saudi Arabia has reported 244 cases of MERS since the disease was identified in 2012, of which 79 have been fatal.