Sleep is the best medicine. Although older adults need as many hours of sleep as younger adults—7-9 hours each night—we often hear the commonly-held but mistaken belief that you need less sleep as you age. Disruption of sleep can cause memory problems, depression, and a higher susceptibility to falls.
In the United States, insomnia is the third most common reason for a medical visit, behind only headaches and the common cold. As sleeping patterns change for older adults—going to sleep earlier, getting up earlier and napping during the day—it becomes more difficult to fall asleep at night. Once asleep, older adults spend less time in deep sleep—rapid eye movement (REM) sleep—and are often therefore light sleepers. By themselves, even these normal changes disrupt sleeping patterns. Which is why more than half of older adults have a sleep disorder. The rate is higher among residents of long-term care facilities. Although researchers have described more than 70 sleep disorders, four disorders hold top billing. These include insomnia, sleep apnea, restless legs syndrome, and narcolepsy. Among older people, women experience insomnia more than men. Insomnia—which is the most common sleep problem in adults age 60 and older—results in trouble falling and staying asleep. About 60 million Americans a year have insomnia, which tends to increase with age. It affects about 40 percent of women and 30 percent of men. Sleep apnea is a disorder of interrupted breathing during sleep. It usually occurs in association with fat buildup or loss of muscle tone which is associated with aging. These changes results in the windpipe to collapse during breathing when muscles relax during sleep and is usually associated with loud snoring (though not everyone who snores has this disorder). An estimated 18 million Americans have sleep apnea. Restless legs syndrome (RLS) and periodic limb movement disorder (PLMD)—an unpleasant crawling, prickling, or tingling sensations in the legs and an urge to move them for relief—affects as many as 12 million Americans. In one study, RLS and PLMD accounted for a third of the insomnia seen in patients older than age 60.