What causes insufficient blood supply to the brain?

The main causes of insufficient blood supply to the brain are as follows: First, the most common cause is cerebral atherosclerosis, and the most common causes of cerebral arteriosclerosis include high blood fat, hypertension, diabetes, smoking, obesity and other risk factors. These risk factors will cause the destruction of the intima of the arteries, a large number of lipid components deposited in the intima of the arteries cause arteriosclerosis, lumen stenosis, naturally will cause insufficient blood supply. For this condition, it is recommended to take anti-platelet aggregation drugs, usually pay attention to control risk factors, do not smoke, do not drink alcohol. The second cause may be caused by arterial spasm, can be treated with calcium ion antagonists. Other causes include prolonged anxiety, tension, anemia, cardiac insufficiency, can also cause cerebral insufficiency.