Hypertension is a multifactorial disease. Many people have heard of “hypertension”, a disease that can stay with you for the rest of your life and can have terrible consequences if you do not manage it well. One type of hypertension is called secondary hypertension, also known as symptomatic hypertension, which is caused by certain identified diseases and causes, such as nephritis, renal artery stenosis, primary aldosteronism, cortisolism, pheochromocytoma, etc. This accounts for only a small part of hypertension; around, if the original disease can be found in time to cure, blood pressure may no longer rise; the other type of hypertension is called Primary hypertension, the vast majority of hypertensive patients belong to this category, and its cause is not clear. Studies have shown that its onset is related to high salt diet, obesity, excessive alcohol consumption, smoking (controllable factors), ageing and genetics (uncontrollable factors), etc. Correcting these controllable factors and changing these poor lifestyles will not only help control blood pressure, but also reduce the risk of cardiovascular events. So what role do these controllable factors play in the development of hypertension? And how can they be corrected? And what is meant by cardiovascular events? We will cover this in detail in the next lecture.