The causes of slow brain response include overuse of brain, aging, lack of sleep, brain diseases, etc. The causes should be clarified and then targeted treatment should be carried out. 1. Excessive use of the brain: prolonged use of the brain without rest, as well as maintaining mental labor when sick, will lead to cerebral nerves overworked, and further symptoms of slow reaction of the brain can not remember things, should pay attention to rest, appropriate relaxation. 2. Increase in age: For people over 40 years old, brain function gradually deteriorates, memory gradually decreases, and sometimes the brain will show slow response, which is a normal phenomenon and generally do not need to worry too much. 3. Lack of sleep: prolonged poor sleep quality or often stay up late, will cause excessive brain fatigue, resulting in slow brain response can not remember things, usually should develop a good routine, go to bed early and get up early. 4. Brain diseases: Hashimoto’s encephalopathy, or Alzheimer’s disease in the early stages, will lead to the symptoms of not being able to remember things, the brain is too slow to respond, should consult a doctor in time for formal treatment, to avoid delaying the condition. Different reasons for not being able to remember things and slow brain reaction are treated in different ways, so you should actively find out the reasons and make timely adjustments and treatments.