Patients with MCI experience a decline in their cognitive functioning, and awareness of this problem allows for easy reactions with an alteration in mood or behavior (Mirza et al., 2017). Depression is a significant mental health problem in the elderly (Gao et al., 2013), while behavioral and psychiatric symptoms are common in patients with MCI. One of the most challenging differentials of dementia and cognitive impairment is depression, which may be a risk factor for the progression of MCI to dementia (Jingru, 2018). But the decline in cognitive function and memory may negatively impact patients' mood, relationships, and treatment compliance (Chandler et al., 2016). MCI does not affect normal life people can do many things normally and independently (Dominguez‐Chavez et al., 2019). However, even though some MCI patients have a chance of returning to a normal level of cognitive functioning, the risk of developing dementia remains higher than that of patients who have never been diagnosed with MCI, ranging between 5% and 10% compared with typical older adults (Mitchell & Shiri‐Feshki, 2010 Petersen et al., 2018). Some patients can maintain stability or restore normal cognitive functioning. MCI can easily develop into dementia if there is no active and effective intervention early. Researchers have found an overall MCI prevalence of 20.8%, indicating approximately 23.86 million individuals aged 65 years or older suffer from MCI in China (Jia et al., 2014). The American Academy of Neurology (AAN) updates its clinical practice guidelines for MCI, and epidemiological data have shown that the prevalence of MCI increases with age (Petersen et al., 2018). Mild cognitive impairment (MCI) is a transitional stage between normal aging and dementia in the elderly (Dominguez‐Chavez et al., 2019 Edmonds et al., 2019 Petersen et al., 2018) and is believed to be a risk factor for Parkinson's disease (Hoogland et al., 2017). The number of people aged 60 years and older was 1 billion in 2019, which is projected to increase to 1.4 billion by 2030 and 2.1 billion by 2050 (World Health Organization, 2018). The proportion of people aged 60 years and older in the population has been increasing in recent years (Huang et al., 2019 Nayak et al., 2019).
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