The brain is good at forgetting things, the reason is mainly to consider the following aspects: the first aspect, if it is a young man who has a forgetfulness, mostly related to the patient’s poor lifestyle, belongs to the functional problem, such as in the long-term mental in a state of tension, stress, will make the brain cells produce fatigue, which will make the patient appear memory loss; There is also excessive smoking, drinking alcohol, lack of vitamins, long-term stay up all night, Sleep deprivation, etc., will lead to the patient’s temporary deterioration of memory, the brain is good at forgetting things. The second aspect, and if the elderly brain good forgetfulness, and patients with the increase in age, the decline in brain function, but part of the patient is also related to cerebral arteriosclerosis, cerebral blood flow reduction, which leads to memory loss, serious such as Alzheimer’s disease, dementia, will lead to the patient’s brain good forgetfulness, but also a decline in the performance of the cerebral nervous function.