Sleep normally occurs in several stages. The sleep cycle includes:
The sleep cycle is repeated several times during the night.
With aging, sleep patterns tend to change. Most people find that aging causes them to have a harder time falling asleep, and that they awaken more often.
Total sleep time remains the same or is slightly decreased (6.5 to 7 hours per night). It may be harder to fall asleep and you may spend more total time in bed. The transition between being asleep and awake is often abrupt, giving older people the feeling of being more of a "light sleeper" than when they were younger.
Less time is spent in deep, dreamless sleep. Older people average three or four awakenings each night, and are more aware of being awake.
Awakenings are related to less time spent in deep sleep, and to factors such as the need to get up to urinate (nocturia), anxiety, and discomfort or pain associated with chronic illnesses.
EFFECT OF CHANGES
Sleeping difficulty is an annoying problem, but it is seldom dangerous. Because they sleep more lightly and wake up more often, older people may feel deprived of sleep even when their total sleep time has not changed.
Sleep deprivation can eventually cause confusion and other mental changes. It is treatable, and symptoms should be reduced when you get enough sleep. Sleep problems are also a common symptom of depression. You should see a health care provider to determine if depression or another health condition is affecting your sleep.
The elderly respond differently to medications than do younger adults. It is very important to talk with a health care provider before taking sleep medications. Avoid sleep medications, if possible. However, antidepressant medications can be very helpful if depression affects your sleeping. Some antidepressants do not cause the same side effects that occur with sleep medications.
Sometimes, a mild antihistamine works better than an actual sleeping pill for relieving short-term insomnia. However, most health experts do not recommend these types of medicines for the elderly.
Sleeping medications (such as benzodiazepines) should be used only as recommended, and only for a short time. Some can lead to dependence (needing to take the drug to function) or addiction (compulsive use despite adverse consequences). Some of these drugs build up in your body, and toxic effects can develop if you take them for a long time. Confusion, delirium, falls, and other side effects can develop.
You can take measures to help you sleep:
If you can't fall asleep after 20 minutes, get out of bed and do a quiet activity, such as reading or listening to music.
When you feel sleepy, get back in bed and try again. If you still can't fall asleep in 20 minutes, repeat the process.
Drinking alcohol at bedtime may make you sleepy. However, it is best to avoid alcohol, because it can make you wake up later in the night.
Minaker KL. Common clinical sequelae of aging. In: Goldman L, Schafer AI, eds. Cecil Medicine. 24th ed. Philadelphia, Pa: Saunders Elsevier; 2011:chap 24.
Review Date: 9/3/2012
Reviewed By: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M. Health Solutions, Ebix, Inc.
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