In some patients, microcephaly may be caused by heredity or chronic alcoholism. The development of cerebral arteriosclerosis with age can also cause microcephaly, which is a normal developmental process of the organism. Microcephaly does not affect the patient’s life expectancy, and no one will die from microcephaly. Since the diseases of the brain can cause the death of the human body is the development of arteriosclerosis with age, the emergence of cerebral tethering, cerebral infarction, cerebral hemorrhage and other diseases, as well as tumors of the brain, occupational diseases, as well as complications of the organism caused by the above mentioned diseases, which can also lead to the death of the patient. The way to prevent cerebellar atrophy, usually do appropriate exercise, drink more water, increase blood circulation in the brain, slow down the aging process. In addition, the degree of cerebellar atrophy and the degree of cognitive dysfunction of the patient does not show a positive correlation, the degree of cerebellar atrophy is heavy, the patient may not show dementia. And patients without microcephaly may still have dementia. So it is important to realize that microcephaly does not affect life expectancy, nor does it represent a decline in intelligence.