Alzheimer’s disease and brain atrophy are not equal. Alzheimer’s disease is a symptom of the central nervous system, and the main lesion structure is hippocampal atrophy, which is part of the brain structure, so there is no relationship between Alzheimer’s disease and cerebellar atrophy. It is not accurate to say that Alzheimer’s is a shrinkage of the cerebral cortex. Alzheimer’s disease is a degenerative change of the central nervous system involving the cerebral cortex and subcortical structures, not just cortical atrophy. Alzheimer’s is a disease, while cerebral atrophy is an imaging term that can be present in the cerebral cortex and cerebellum. Patients with brain atrophy do not necessarily have symptoms of Alzheimer’s disease, or even symptoms of cognitive impairment. Nowadays, many elderly people in our society do imaging tests, such as head CT, and return brain atrophy, they are more nervous that they already have Alzheimer’s. This view is not correct, and the specific situation should be asked to the doctor around or to the hospital in time to consult with the doctor.