Sleep Disorders - Causes Of Memory Impairment: Improving Memory Understanding Age Related Memory Loss

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Sleep disorders

With age, people become more prone to sleep disorders. These problems can interfere with memory in two ways. A good night's sleep is crucial for memory consolidation; therefore, lack of sleep deprives you of the time your brain needs for consolidating memories (see "Lack of sleep"). Lack of sleep also reduces alertness during the day, thereby undermining your ability to focus and process new information.

The most common sleep disorder is insomnia, which is difficulty falling sleep or staying asleep. Unfortunately, many medicines used in the treatment of insomnia can also impair memory and general cognitive function, and it's best to avoid long-term use of sleep-inducing medications. Nondrug treatment strategies are often helpful, such as minimizing daytime napping; maintaining a regular bedtime; avoiding caffeine, alcohol, and strenuous exercise at night; and doing something relaxing before bed, such as reading or taking a warm bath (see "Get a good night's sleep").

Another common disorder is obstructive sleep apnea, in which interrupted breathing can cause sleep to be fragmented by hundreds of "mini-awakenings" each night. Loud snoring and sudden gasping are common symptoms. Even after 8 or 10 hours of sleep, people with the disorder awaken feeling unrested. People with suspected obstructive sleep apnea should see their doctor and arrange to have an overnight sleep study during which their breathing and sleep cycles are monitored. Treatment may include weight loss, inhalers or prosthetics to open the airway, the use of an assistive breathing device, or surgery.

Last updated:	January 23, 2007