Non-modifiable risk factors for cerebral hemorrhage (1) Age: 1.4-1.6 times higher in the 75+ group than in the 65-74 group; (2) Gender: male > female, 1.3:1-1.7:1; (3) Race and ethnicity: black > white, Han Chinese > other ethnic groups; (4) These risk factors, such as age, cannot be intervened in humans. (4) these risk factors such as age, human beings are unable to intervene, as age increases, the chance of stroke is to increase the risk of cerebral hemorrhage modifiable risk factors Hypertension The risk of cerebral hemorrhage is proportional to the increase in blood pressure, the relative risk of those diagnosed with hypertension is 12 -32 times higher than those with normal blood pressure, the United States has reported that patients with definite hypertension, the risk of bleeding in men is The incidence of cerebral hemorrhage is much lower in patients with stable blood pressure than in those with large diurnal blood pressure fluctuations. Systolic hypertension alone is also a risk factor and deserves attention. There is a clear relationship between cardiac disease and the occurrence of ischemic stroke, such as atrial fibrillation, which is responsible for 7%-30% of strokes over 60 years of age. Coronary artery disease, with stroke occurring in 0.7-3.2% of patients within two weeks of an acute infarction. This should be noted. Left ventricular hypertrophy, with a 4-fold increased risk of stroke in men and 6-fold in women. Diabetes The prevalence of diabetes is 1.8 times higher in men and 2.2 times higher in women than in non-diabetic patients. Even if clinical diabetes is not diagnosed, maintaining blood glucose in the high boundary of the normal range is an important factor in cerebral hemorrhage. Other factors (1) Smoking: For both men and women of all ages, smoking is a significant independent factor in the incidence of cerebral hemorrhage, and the risk of hemorrhage increases with the amount of cigarettes smoked per day. (2) Alcohol: Alcohol consumption is an important potential risk for elevated blood pressure and increased prevalence of hypertension. (3) Homocysteine levels, obesity, migraine, oral contraceptives, snoring.