Case: 62-year-old Master Wang, has always had the habit of snoring in his sleep, as people get fat in middle age, snoring is more powerful, sometimes accompanied by sleep can not breathe or even be suffocated, and very shallow sleep, always waking up 4-5 times a night, and feel dizzy and slow reaction during the day; around 50 years old, Master Wang began to have some bad memory, always unable to find something in what place, and go out to buy food. The company’s son and his partner have always believed that memory loss is a normal sign of decline in the elderly. In the past 2 years, Master Wang began to be reluctant to go out, sitting in front of the TV in the morning, watching TV always like to snooze, after dinner at night early to go to bed, sleep until 1-2 am woke up, woke up, can not sleep, can only pace back and forth in the house, so that the family is not good rest, memory is getting worse, sometimes the old partner just explained things turn around and forget, family members this dragged Master Wang to the hospital to see The hospital MRI report brain atrophy, after a thorough examination of the hospital’s diagnosis is “senile dementia”, and has developed from mild to moderate. In fact, poor sleep in young and middle-aged people is closely related to the development of Alzheimer’s disease, Parkinson’s disease and other degenerative diseases in old age. According to a recent report in the British Daily Mail, people with poor sleep quality are more likely to suffer from Alzheimer’s disease in old age; a study at the University of California found that sleep snoring may damage the cognitive ability of older women and can trigger dementia in severe cases; the journal Science also reported that long-term sleep deprivation may eventually trigger Alzheimer’s disease, which is caused by the accumulation of abnormal Aβ proteins that promote Alzheimer’s pathology. With the aggravation of Alzheimer’s disease, the accompanying sleep disorder also becomes more and more serious. About 34-82% of dementia patients will experience poor sleep, and poor sleep not only significantly reduces the quality of life of dementia patients and their families, but also further accelerates the decline of patients’ memory. Sleep disorders in Alzheimer’s disease also include difficulty falling asleep, increased nighttime awakenings, early awakening, punching and kicking during sleep, rolling out of bed, sleep walking disorder, nightmares, significantly increased daytime “napping” or napping, and the “sunset syndrome” that often occurs in patients with moderate to severe dementia “(a series of mood and cognitive changes at dusk, such as mood disturbance, anxiety, hyperactivity, and disorientation, lasting several hours or the whole night). Its pathogenesis is due to an acute lack of blood supply to the brain. (Although most of them can return to normal within a few hours or days, this acute lack of cerebral blood supply is often a precursor to cerebrovascular accidents and heart attacks, so it should not be taken lightly). Poor sleep quality is a common problem among middle-aged and elderly people, but it does not attract enough attention. Since sleep disorders often appear years or even more than 10 years before clinical symptoms of dementia and Parkinson’s disease, if you or your family members are suffering from poor sleep, please seek early consultation and timely treatment to delay or even prevent the onset of dementia.