Dementia is a group of primary degenerative brain diseases of unclear etiology, which belong to the group of brain diseases leading to progressive damage of nerve cells. Since brain cells are responsible for normal thinking, memory and activities, the loss of nerve cells leads to the gradual deterioration of higher intelligence and eventually affects daily life. The onset of Alzheimer’s disease is usually over 70 years of age, but there is a tendency for the onset of the disease to occur earlier. Early signs and symptoms of Alzheimer’s disease may vary from person to person, but collectively they include: memory loss, loss of numeracy, loss of thinking ability, personality and emotional changes, poor orientation, poor self-care and deterioration of language. If the disease is not detected and treated in time at the initial stage, the above symptoms will be further aggravated, starting with impairment of near memory, followed by impairment of far memory, and eventually impairment of both near and far memory, thus affecting daily life. On the basis of further memory damage, dementia patients will also appear in the following eight symptoms: 1, spatial orientation disorder Early can not accurately determine the location of objects, in the familiar environment will be lost, to the middle, even in their own home also happened to be lost. Inability to trace and draw pictures. Difficulty in dressing, such as wearing pants backwards, or even taking the trouser leg as the sleeve of the blouse. 2.Language Disorders Difficulty in finding words is the first language disorder that manifests itself, such as inability to make sense of words, monotonous use of words, and inability to call out objects. In the late stage, the person who listens to the speech is often puzzled as he or she rambles and drones on and on. The patient’s listening comprehension is seriously impaired, and the patient often answers the wrong questions, may appear to imitate the language, and finally the patient can only make unintelligible sounds, and develops to be speechless. Difficulty in writing Difficulty in writing often occurs in the early stage of Alzheimer’s disease. The common writing errors are wrong sentences and wrong words. In the middle and late stages of the disease, patients even do not recognize their own names and cannot write their own names. About 1/3 of the patients do not recognize the faces of their relatives and familiar friends, and some of them do not recognize themselves. Cannot express continuous complex movements correctly with gestures, such as loading a pipe, striking a match, lighting a cigarette; cannot do tooth brushing according to instructions; skills that have been skillfully mastered, such as cycling and swimming, are lost after the disease, and in severe cases, the patient will not be able to use any tools. 5.Calculation disorder Shopping can’t do math or miscalculate. Can not correctly formulate equations, and in severe cases, even simple addition and subtraction can not be calculated, do not recognize numbers and arithmetic symbols. 6, poor judgment, attention distraction Alzheimer’s patients can appear in the early poor judgment, loss of ability to generalize, attention distraction, loss of recognition and lack of concentration. Normally, they can still deal with skillful and simple repetitive work, but if a new situation occurs or a new request is made to them, they are incompetent in their work. 7.Mental disorder Early personality and social behavior may still be intact. However, emotional apathy often occurs early, because patients can show mania, hallucinations and delusions, depression, personality changes, delirium, etc., so patients with senile dementia are sometimes mistakenly sent to psychiatric hospitals for treatment. 8, movement disorders early movement is often normal, to the mid-term is manifested as excessive activity of restlessness, incontinence, life can not take care of themselves. There can also be muscle stiffness, reduced movement, tremor, easily misdiagnosed as “Parkinson’s” disease. In the advanced stage of the disease, quadriplegia may occur. If there is a further decline in intelligence, the patient may not have any conscious response to external stimuli and may not eat or drink. If several or all of the above conditions occur, it can be judged to have senile dementia, and need to consult a doctor in time for a clear diagnosis and treatment. As a matter of fact, memory gradually begins to deteriorate when people reach middle age. Starting early to prevent intellectual decline and improve memory function of the brain is very favorable to the prevention of premature senile dementia and Alzheimer’s disease. The following points can be used as reference for the majority of middle-aged and elderly friends: 1. Diet. Eat more dried fruits. Such as walnuts in the phospholipids on the brain nerve cells have a good health care role, often eat walnuts can be strong body, but also can delay aging, to enhance brain activity is more beneficial. Usually eat more sea fish and shellfish. The latest research shows that eating more fish and eggs can prevent Alzheimer’s disease, because these foods contain high levels of unsaturated fatty acids. A nine-year study of 4,000 people concluded that drinking 3 to 4 small glasses of wine a day can reduce the chance of developing Alzheimer’s disease by 75%. Exercise. If you can persist in the morning and evening with both thumbs to press the Fengchi acupoints for 5 to 10 minutes, to the extent of localized soreness and swelling, can relieve the meridians and activate collaterals, smooth blood flow, anti-aging and brain health effects. In order to prevent premature decline of brain cells, you can often move the arm, every day to do stretching arms, turn the wrist, empty hands, empty fist, throw the ball to catch the ball, play fitness ball, etc., each action to do 1-2 minutes. Foot sports, to barefoot on the pebbles to walk the best results, or ankle rotation and so on, each time to do 1-2 minutes. 3, diligent use of the brain. Some data say that the intelligence of those who use their brains diligently is 50% higher than that of those who use their brains less. Some people have long been into old age, still thinking fast, clear thinking. On the contrary, some people just to middle age, memory loss, slow thinking. This has a lot to do with diligent use of the brain. Elderly people actively and effectively participate in brain exercise, such as memorizing poetry, calligraphy, painting, reading newspapers, doing puzzle games, etc., not only can slow down the aging of the brain, but also can prevent the occurrence of Alzheimer’s disease. 4, regular life. Avoid excessive mental stress, rationalize work, study and entertainment, so that the excited parts of the cerebral cortex take turns to get rest, and prevent excessive excitement and aggravate the burden on the nervous system. 5, affectionate care. Many patients are very concerned about their own intellectual changes, often because of a very small difference and become sensitive, suspicious, sink, self-loathing, moping all day long, the performance of depression and anxiety, if you do not get the family’s understanding and caring, it is possible to fall into a vicious circle, accelerate the evolution of the disease. The help of family members, on the other hand, can slow down the progress of symptoms. The treatment of Alzheimer’s disease mainly relies on drugs, but according to the current level of medical development, although some progress has been made, but still has not conquered this problem, dementia is still an incurable disease.