Insomnia plagues many during hot summer months
http://www.columbiatribune.com/news/2011/aug/14/insomnia-plagues-many-during-hot-summer-months/
BY EDWARD M. EVELD The Kansas City Star
Sunday, August 14, 2011
Summertime is so relaxing, what with its casual schedule, the warm weather that draws folks outdoors late into the evening, the promise of vacation respite and fun. And all of that restful sleep.
Except when you can’t get to sleep. Or you crash, but you can’t stay asleep.
“Summer is really fraught with sleep hazards,” psychologist and author Michael Breus said.
Right about now, some people are realizing the season isn’t the reprieve they envisioned, and few things are more frustrating than summer sleep problems.
“It’s the heat,” said Sue Sykes Berry of Kansas City, who has trouble sleeping when her house won’t cool down at night. “Then there’s the dog and cat that want to sleep with me, even if it’s 100 degrees.”
She’s right about the heat, and there’s good science to back her up. Humans tend to sleep best when the ambient temperature is 65 to 75 degrees.
Hot nights aren’t alone in disrupting sleep. And you are far from alone if the summer months bring more tossing and turning than rejuvenation. Breus said the numbers go up in his sleep lab during the summer.
Knowing the causes of summer sleep problems can help point to corrections, sleep experts said.
“Almost any change of the environment has some degree of effect on sleep quality,” said Damien Stevens, a physician who specializes in sleep medicine at the University of Kansas Hospital.
And you can be a victim of disrupted sleep — the bane of high-quality sleep — without even knowing it, Stevens said. Unless you’re awake for several minutes, you won’t recall the disruption.
Much shorter wakeful periods can occur — three seconds each, say — but those are enough to reduce sleep quality.
So, what are the worst troublemakers?
First, the heat. People fall asleep as their body temperature falls, and they wake up in the morning when body temperature rises.
But all during the night, as the body goes into “rapid eye movement” sleep, it periodically loses the ability to sweat and shiver, said Ann Romaker, medical director of St. Luke’s Health System’s Sleep Disorders Centers.
Body temperature starts to match the surrounding air temperature. The result can be numerous waking episodes.
If your air conditioner is struggling, adding a fan can help. A breeze on the skin increases evaporation, cooling the body.
Besides temperature issues, a host of lifestyle factors contribute to summer sleeplessness.
In general, exercise and increased activity improve sleep quality, but their summer timing can be a sleep killer.
“It’s amazing how many Little League and premier games will go till 10 o’clock or later,” Romaker said.
Many people report they have “pent-up energy” after exercise, and that delays restfulness, Stevens said, so it’s a good idea to end workouts two hours before going to bed. Some people need four or even six hours between exercise and bedtime.
Summertime means crowded bar patios late at night and evening runs for ice cream and “fourth meals,” even during the week. Experts said the effects of food and alcohol on sleep are often misunderstood.
Alcohol acts as a sedative at first, helping people fall asleep. But later during the night, the effect is reversed, causing episodes of wakefulness and low-quality sleep. Romaker recommends no alcohol in the two hours before going to bed.
Late eating can be a minus for weight maintenance, and it also can disturb sleep, especially for those with acid reflux problems. A good guideline is to stop eating two hours before going to bed, Romaker said.
“You should never go to bed hungry,” Breus said, “but you should be careful how much you ingest late. The body was not meant to digest food lying down.”
Iced tea and coffee lovers often underestimate their caffeine intake, experts said. Although some people report caffeine doesn’t keep them awake, and they might be right, it’s a stimulant that for many people lingers in the body for hours.
Anyone with sleep problems should try cutting off caffeine at 2 p.m., or even noon, and limiting total consumption. The caffeine equivalent of 2 ½ cups of coffee a day is a good maximum for many people, Breus said.
How else to combat sleep issues? Try a nap. Although working people can rarely swing it, an afternoon rest of 15 to 30 minutes might help counter the effects of summer sleep problems, Stevens said. So, how about some properly cooled workplace nap centers?
Sykes Berry likes the idea.
“I lived in Spain for three years, and they really honored the siesta,” she said. “It’s a hot climate. It’s a great plan.”
This article was published on page E3 of the Sunday, August 14, 2011 edition of The Columbia Daily Tribune. Click here to Subscribe.
MY THOUGHTS
I will have to agree with this article. My sleep problems magically disappear when I'm in a much cooler climate. With temperature between 9 to 17 degrees Celsius, insomnia vanishes.
