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.
More than 100,000 people -- half of them children -- die every year due to waterborne diseases, experts say
Located in the bustling Adjame quarter of Ivory Coast's main city and commercial hub, the haven for fake medicine has been targeted time and again by authorities and stockpiles burnt.
Seven firms to receive ecolabel certifying that their products are environment-friendly
Disasters saddle U.S. with $306 billion price tag, cause 362 deaths
Association for Prevention of Drug Abuse head says close to more than 2.5 million children are drug addicts in Bangladesh
King penguins are certainly accustomed to chilly weather, more so than species like the Humboldt that prefer somewhat warmer climes, said zoo curator Malu Celli.
Some eight million children and teenagers across the Southeast Asian nation will receive the shot to prevent further spread of the disease which is caused by a bacterial infection.
Two players vomited on the pitch, and play had to be halted briefly.
French pharmaceutical giant Sanofi announced Wednesday that its world-first dengue vaccine could lead to more severe symptoms for people who had not previously been infected.
Doctors Worldwide Turkey says it has performed 3,000 cataract surgeries in Horn of Africa country
Over 40,000 cases of cholera seen in Democratic Republic of Congo since July, says Health Ministry
Decked out in red to signify their "Stop Coal" campaign, the protesters chanted and beat drums as they snaked through the former West Germany capital toward the UN centre that will host the 12-day, 196-nation talks, tasked with implementing the landmark Paris Agreement.
The Greenhouse Gas Bulletin, the UN weather agency's annual flagship report, tracks the continent of dangerous gasses in atmosphere in the post-industrial era (since 1750).
£10 ($13) tax introduced to cut British capital's poor air-pollution records
Despite all-out efforts to give the Chinese Communist Party blue skies for its twice-a-decade congress, Beijing's notorious smog has cloaked the mega-city in its trademark toxic haze.
Equipment donation to children's oncology institute is first project of state-run aid agency TIKA in Brazil