There are many factors that lead to hypertension, and a high-salt diet is also a risk factor. A high-salt diet can lead to increased crystal osmolality in the plasma, and tissue fluid can be transferred to the blood vessels, leading to an increase in effective circulating blood volume, resulting in increased blood pressure. Increased plasma osmolality affects the osmotic pressure receptors in the hypothalamus, increasing the secretion of antidiuretic hormone, decreasing urine output, increasing circulating blood volume, and increasing blood pressure. In addition to a high-salt diet, hypertension is also a polygenic genetic disease, and the risk of hypertension is increased in families with a high blood pressure cluster. A high-fat diet is also a risk factor for hypertension, and a high-fat diet leads to atherosclerosis, hardening of blood vessels, narrowing of the lumen, and a natural increase in blood pressure. Blood pressure can also rise when you are in a stressful and anxious situation for a long time. The causes of hypertension are extremely numerous, and for unexplained hypertension, it is called primary hypertension.