Primary hypertension is a type of hypertension in which the systolic blood pressure is ≥140 mmHg, and/or the diastolic blood pressure is ≥90 mmHg, but there are no secondary predisposing factors. Risk factors for primary hypertension include family history of hypertension, increasing age, smoking and drinking, obesity, salty diet, and chronic stress. 1. Family history of hypertension: primary hypertension has obvious family aggregation, and people with a family history of hypertension are more likely to develop hypertension. 2. Increasing age: with increasing age, arteriosclerosis, arterial elasticity decreases, resulting in higher blood pressure. 3. Smoking and drinking: Smoking and drinking will stimulate the sympathetic nerves, causing the heart rate to accelerate and the blood vessels to constrict, resulting in higher blood pressure. 4. Diet too salty: food too salty, often eat pickled food, etc., will increase the intake of sodium, resulting in higher blood pressure. 5. Prolonged mental stress: increased secretion of angiotensin leads to higher blood pressure. If you have the above risk factors, you should go to the hospital in time to screen for hypertension. In addition, if the patient also suffers from hyperhomocysteinemia, you need to supplement folic acid to avoid delay in diagnosis and treatment.