If a patient has high low pressure when measuring blood pressure, there are usually several factors: 1) age, compared to the elderly, middle-aged people tend to have high low pressure. 2) hereditary factors can also lead to high low pressure. 3) secondary factors, such as renal artery stenosis or renal hypertension, can also lead to high low pressure. 4) lifestyle factors or dietary habits can also lead to high low pressure. For example, smoking and alcohol abuse, high salt, high fat and high sugar diet, or the tendency of patients to become overly fatigued or stay up late at night, resulting in sympathetic overexcitation, can cause an increase in low pressure.