Poor Sleep Contributes to Health Problems
They can include diabetes and high blood pressure, studies reveal
By Steven Reinberg
HealthDay Reporter
(HealthDay News) -- New studies are discovering just how vital sleep
is to overall health.
So, sleep habits should become a standard part of a complete
check-up, researchers say.
"There is increasing evidence that there is a very strong
relationship between sleep quality and physical and mental health,"
said Dr. Phyllis C. Zee, a professor of neurology at Northwestern
University's Feinberg School of Medicine.
"If you have poor health, that is associated with poor sleep. Also,
if you have poor sleep, there is an association between that and
poor health," Zee said. "What we don't have yet is the research to
categorically say that if you improve sleep, you will improve
conditions, such as diabetes or hypertension, or other medical
conditions."
Still, physicians should be asking their patients about the quality
and quantity of their sleep, Zee said. "Sleep should be another
vital sign," she said.
Zee wrote an editorial in the Sept. 18 issue of the Archives of
Internal Medicine, a special, themed issue on sleep and its
relationship to overall health.
In one study, led by Richard L. Nahin, a senior advisor for
scientific coordination and outreach at the U.S. National Center for
Complementary and Alternative Medicine, looked at why people had
trouble sleeping and how many were using alternative drugs to help
them sleep.
Insomnia and trouble sleeping are most often associated with high
blood pressure, heart failure, anxiety and depression, according to
a national survey of 31,044 adults. "That's unusual. It had been
most often thought that insomnia was quite prevalent on its own, but
only 4 percent of the people who said they had insomnia said they
had it without any of those conditions," Nahin said.
The researchers also found that 1.6 million Americans are using
alternative therapies, such as melatonin to treat their insomnia.
"That's quite high when you consider that there is very little
reliable data on the efficacy and safety of using the products
people are using," Nahin said.
These findings have implications for treating sleep problems, Nahin
said.
"Instead of treating the insomnia itself, a health-care provider
might be better off treating one of these comorbidities," he said.
"In addition, a physician seeing a patient for insomnia should ask
if the patient is using any alternative and complementary
treatments, because they might upset the treatments the health-care
provider wants to apply."
Another study found that people who have sleep-related breathing
disorder -- marked by frequent pauses in breathing, labored
breathing, or reduced breathing during the night -- were two to 2.6
times more likely to develop depression. Moreover, the odds of
depression increased as breathing disorders became more severe,
according to researcher Paul E. Peppard and colleagues from the
University of Wisconsin.
And a study by French researchers found that people with allergic
rhinitis, caused by hay fever and other allergies, have more
difficulty sleeping and more sleep disorders than people without
allergies. "The results show a significant impact of allergic
rhinitis on all dimensions of sleep quality and, consequently, a
lower quality of life as reflected by more somnolence [sleepiness];
daytime fatigue and sleepiness; and impaired memory, mood and
sexuality, with a significantly increased consumption of alcohol and
sedatives in cases compared with the control group," the study
authors wrote.
One expert agrees that sleep problems shouldn't be ignored.
"If you think insomnia is an annoyance and merely something you
should tough out, that may be a mistake," said Michael L. Perlis,
director of the Sleep Research Laboratory at the University of
Rochester, in New York. "It may lead you down the path to other
morbidities. It would also be a mistake because it's treatable."
Other studies in the same journal issue found that:
- Fewer hours of sleep may contribute to poor health in young
adults.
- Those in rural areas who sleep fewer hours appear to weigh
more.
- The immune system may play a role in narcolepsy, a disorder
characterized by an uncontrollable urge to sleep.
- The immune system may be affected by a lack of sleep that
contributes to inflammation and a variety of diseases.
More information
The National Sleep Foundation can tell you more about
getting a good night's sleep.
SOURCES: Richard L. Nahin, Ph.D., M.P.H., senior advisor, scientific
coordination and outreach, U.S. National Center for Complementary
and Alternative Medicine, Bethesda, Md.; Phyllis C. Zee, M.D.,
Ph.D., professor, neurology, Northwestern University Feinberg School
of Medicine, Chicago; Michael L. Perlis, Ph.D., director, Sleep
Research Laboratory, department of psychiatry, University of
Rochester, N.Y.; Sept. 18, 2006, Archives of Internal Medicine