Although we do not know the causual relationship, we know that the more the AD progresses, the more we find sleep disorders.[29] In the same way, the more sleep disorders there are, the more the disease progresses, forming a vicious circle.[29] Taken this into account, sleep disturbances are no longer a symptom of AD and relationship between sleep disturbances and AD is bidirectional.[30]
Narcolepsy is a brain disorder that causes excessive daytime sleepiness. There is sometimes a genetic component, but most patients have no family history of the problem. Though dramatic and uncontrolled "sleep attacks" have been the best-known feature of narcolepsy, in reality many patients do not have sleep attacks. Instead, they experience constant sleepiness during the day.
One factors that could explain this change in sleep architecture is a change in circadian rhythm, which regulates sleep.[29] A disruption of the circadian rhythm would therefore generate sleep disturbances.[29] Some studies show that people with AD have a delayed circadian rhythm, whereas in normal aging we will find an advanced circadian rhythm.[29][31]
Stay cool at night. Make sure your bedroom is at the right temperature to help ensure a good night’s sleep. The National Sleep Foundation suggests setting the temperature between 60 and 67 degrees Fahrenheit for optimal sleep. Using cooling sheets and pillows can also help, especially for women in menopause who are experiencing hot flashes at night, says Dr. Alyssa Dweck, assistant clinical professor of obstetrics and gynecology at the Mount Sinai School of Medicine and co-author of “V is for Vagina.”
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