Hypertension is a common and frequent disease among middle-aged and elderly people, so many people ask what is hypertension and what factors are related to hypertension? What are the bad habits around us that can lead to high blood pressure? What are the ways to prevent blood pressure? According to the author’s many years of experience in the diagnosis and treatment of hypertension, and according to the hypertension guidelines of the Chinese Medical Association, I will give you an explanation, so that you can have a clear understanding of hypertension and stay healthy. What is hypertension? Hypertension is defined in the Chinese Guidelines for the Diagnosis and Treatment of Hypertension as a systolic blood pressure ≥140mmHg and/or diastolic blood pressure ≥90mmHg without the use of antihypertensive medication, and is further categorized into grades 1, 2, and 3 depending on the level of elevated blood pressure. Measurements are generally required 2-3 times on non-simultaneous days to determine the level of elevated blood pressure and its classification, especially for mild to moderate elevations. Cardiovascular Risk Level Stratification in Hypertensive Patients Hypertension is actually subdivided into low risk, intermediate risk, high risk, and very high risk based on other symptoms and the patient’s lifestyle, and there are many of these risk factors, which will be the subject of a special article later. The diagnosis of hypertension is as simple as a blood pressure meter measurement, combined with some medical history and symptoms to confirm the diagnosis and classification, without the need for other special tests. Some people ask: I have hypertension but I don’t have any symptoms, do I still need treatment? I can clearly tell you that it has to be treated, and high blood pressure without symptoms is more dangerous. There are many patients, hypertension level 3, very high risk, but the patient does not have any feeling, just feel some head swelling, but this is too dangerous, so high blood pressure, is likely to induce cerebral infarction, cerebral hemorrhage and other serious complications, but the patient is not aware of it, which is very scary, must pay attention to.