When it comes to Alzheimer’s disease, everyone must be thinking that it is a disease that only old people can suffer from, but nowadays, Alzheimer’s is getting younger and younger, do you know what are the precursors of Alzheimer’s? Do you know what are the precursors of Alzheimer’s disease? How do we prevent Alzheimer’s disease in general? Alzheimer’s disease precursors 1. Memory impairment Memory impairment appears at an early stage, especially near memory impairment, where the patient cannot recall what happened tens of hours or even minutes ago. The patient’s daily life is characterized by “losing everything”, “forgetting everything”, repeatedly asking the same questions or saying the same things over and over again. 2.Language impairment Word finding difficulty is often the earliest language impairment in Alzheimer’s disease, mainly manifested in the inability to find the right words when speaking, due to the lack of substantive vocabulary and expressed as a series of empty words; or due to the difficulty in finding words and use too much explanation to express, and eventually become a nattering. 3. Visual-spatial skill impairment In the early stages of dementia and may have visual-spatial skill impairment, the symptoms of which include the inability to accurately determine the location of objects. Some patients with dementia may get lost in familiar surroundings early in the disease. 4. Writing difficulties The inability to write meaningfully due to writing difficulties, such as writing a letter, is often the first symptom to come to the attention of family members, especially some of the more educated elderly. Research suggests that writing errors are related to distant memory disorders. 5, loss of recognition and loss of use is the patient’s inability to recognize objects, although at this time the tactile or visual elements of the object can be recognized; loss of use is the inability to perform purposeful actions that have been learned, although there is a normal ability to move and subjective desire. It is difficult to examine loss of use and loss of recognition in patients with Alzheimer’s disease, and it is sometimes difficult to distinguish them from the consequences of aphasia, visuospatial skill impairment, and amnesia. Dyscalculia often appears in the middle stages of dementia, but may manifest itself in the early stages, such as not being able to count or miscalculate when shopping. There are various reasons for the emergence of dyscalculia, which may be due to visuospatial impairment (inability to correctly list equations), or aphasia due to incomprehension of arithmetic homework requirements, or may be a primary inability to calculate. 7.Poor judgment and distraction Patients with Alzheimer’s disease may have poor judgment, loss of overview ability, and distraction in the early stages. 8.Psychiatric disorder Psychiatric symptoms in the early stage can be manifested as self-centeredness, mania, hallucinations and delusions, depression, personality change, delirium, etc. The mood is not easily controlled. 9.Personality change Personality change is very significant in some patients, more sensitive and suspicious or very fearful, or become more and more irritable, stubborn. 10.Behavior change, motor disorders The movement of Alzheimer’s disease patients is often normal in the early stage, but in the middle stage of the disease, the behavior of patients can be seen as childish and clumsy, and often carry out ineffective labor, aimless labor.