The criteria for normal blood pressure in a 50-year-old male should also be calculated according to the clinically normal blood pressure values, i.e., a systolic blood pressure of 90-140 mmHg and a diastolic blood pressure of 60-90 mmHg is considered normal blood pressure. Hypertension can be diagnosed if there are three steady-state blood pressure values higher than normal on non-same day without taking antihypertensive drugs, i.e., systolic blood pressure > 140 mmHg, or diastolic blood pressure > 90 mmHg, and the three blood pressure measurements are not taken on the same day. While there is no clear unified standard for hypotension, it is generally considered as hypotension when the upper limb blood pressure is <90mmHg systolic and <60mmHg diastolic. At present, there is no definite clinical treatment for hypertension, hypertension is mainly the application of antihypertensive drugs to control blood pressure within the normal range, control the disease and reduce other complications, need to take long-term antihypertensive drugs under the guidance of a professional physician. You should also pay close attention to your blood pressure and take your medication on time. If low blood pressure occurs, it is usually related to malnutrition and insufficient effective circulating blood volume, etc. Patients are advised to seek timely medical attention and treatment. Patients with hypertension should have a low-salt, low-fat diet in their daily life, as well as quit smoking and alcohol, and do some physical exercise to control their weight. Patients with low blood pressure can also exercise appropriately, eat fresh, light, nutritious food, and also follow medical advice on medication.