Four Risk Factors for Stroke High blood pressure, atherosclerosis, heart disease and diabetes are recognized as the four major risk factors for stroke. 1, high blood pressure: the higher the blood pressure, the greater the chance of a stroke. Hypertensive patients are six times more likely to have a stroke than people with normal blood pressure, and about 80% of brain hemorrhage patients are caused by hypertension. Stroke is more likely to occur when diastolic blood pressure rises sharply or when blood pressure fluctuates widely. 2, high blood fat: makes the blood sticky, blood flow is slow, and the amount of blood supplied to the brain is reduced; it is now believed that atherosclerotic cerebral infarction has an extremely high relationship with blood fat, and cerebral atherosclerosis is the basis for the occurrence of stroke. Therefore, atherosclerosis of the elderly, the occurrence of cerebral infarction in the age of 65 or more is particularly high. 3, diabetes: diabetes is often accompanied by atherosclerosis, and the increased glucose content in the blood will also increase blood viscosity and coagulability, which is conducive to the formation of cerebral thrombosis. Some data show that the age of stroke in diabetic patients is 10 years earlier, and the number of incidence is 2 to 4 times higher than that of people with normal blood sugar. 4, heart disease: the blood of the brain comes from the heart. When myocardial infarction and heart failure, the blood supply to the brain is insufficient, which can cause cerebral infarction; when rheumatic heart disease combined with atrial fibrillation and other arrhythmia attacks, the tether in the atrium is dislodged into the cerebral vessels, which can cause cerebral embolism; and coronary arteriosclerotic heart disease is often accompanied by cerebral arteriosclerosis. There are many other risk factors for stroke, which are related to age and lifestyle habits. The older you are, the more dangerous it is, and the incidence increases greatly after the age of 55, while smoking, drinking alcohol and other bad habits can also increase the risk of stroke. Pre-stroke warning signs 1. Yawning: When cerebral arteriosclerosis gradually worsens, the lumen becomes narrower and the cerebral ischemia and hypoxia worsen, especially when the respiratory center is hypoxic, it will cause a yawning reflex. Mostly in the 5 to 10 days before the onset of ischemic stroke, frequent yawning can reach about 80%, which is an important alarm signal. 2. Stuttering: salivation symptoms are poor speech and drooling, with signs of stroke, which may come on suddenly. 3, blurred vision: that is, manifesting as transient visual impairment or visual field defects, mostly recovering on their own within one hour. Cody performed fundus examination and cerebral blood flow measurement on 10 patients who presented with transient visual impairment, and found that three of them had central retinal artery occlusion and seven had branch retinal artery occlusion. 4. Razor fall: It refers to when one holds the razor to shave, the head is turned to one side and suddenly one feels weakness in the arm and the razor falls to the ground and recovers completely after 1 to 2 minutes. This is due to the twisting of the already hardened carotid artery when turning the head and twisting the neck, which aggravates the stenosis and leads to insufficient blood supply to the cranium. 5. Hemiplegia: That is, transient ischemic attack, which is technically already the lightest stroke. According to follow-up observation, ischemic stroke occurs in about half of the people 3 to 5 years after transient ischemic attack. 6. one-pass blackout: i.e., sudden onset of blackness in front of the eyes, unable to see anything, recovering in seconds or minutes, also accompanied by nausea, vomiting, dizziness and impaired consciousness. Recently, Norwegian doctor Koti found 11 cases of carotid atherosclerosis lesions among 18 patients with transient blackout. Anyone who shows one of the above signs should be examined early, diagnosed clearly and treated systematically to avoid the occurrence of stroke.