Washington: People who
can't get enough sleep at night are at greater risk of
hypertension or high blood pressure (BP), according to a new
Researchers at the Henry Ford Center for Sleep Disorders, Detroit,
US, found that the prevalence of hypertension was greater in
insomniacs compared to normal sleepers.
Insomnia is the inability to fall asleep or remain asleep.
"The cause of hypertension in insomniacs is due to the number of
times the individual wakes up during the night as well as their
sleep latency - the length of time it takes to accomplish the
transition from full wakefulness to sleep," says Christopher
Drake, associate scientist at the Henry Ford Centre, who led the
"We found that the longer it took the subjects to fall asleep and
more times they woke during the night, the more severe their
hypertension," adds Drake, according to a Henry Ford statement.
About 30 to 40 percent of adults say they have some symptoms of
insomnia within a given year, and about 10 to 15 percent of adults
say they have chronic insomnia, according to the National Center
for Sleep Disorders Research at the National Institutes of Health.
The Henry Ford study compared 5,314 subjects with insomnia to
those with normal sleep habits using an internet-based
Other study co-authors are Thomas Roth and Ehab Mansoor. Their
research will be presented on June 12 at the Sleep 2012 Conference
in Boston, US.