Most of the old people are afraid of high blood pressure, but not too concerned about low blood pressure. Unbeknownst to them, too low blood pressure is no less harmful than high blood pressure, and can trigger cerebral infarction, angina pectoris, and even serious cardiovascular and cerebrovascular events. Clinically, it is found that a considerable number of patients are induced cardiovascular accidents because their blood pressure is too low. Hypertension is mainly harmful to the heart, brain, kidneys, eyes and large blood vessels throughout the body, while once low blood pressure may lead to ischemia of various organs throughout the body. Especially for the original blood vessels have partially blocked, but have not had time to dredge the blood vessels, blood pressure is too low so that the blood flow through the narrow part of the blood vessels is even more restricted, the narrow blood vessels where the corresponding organs will be ischemia than other organs without narrow blood vessels more pronounced, which in turn cause ischemic damage. If you experience dizziness, drowsiness, lack of energy, or fatigue after taking medication to control your blood pressure, you should pay close attention to whether or not you are experiencing low blood pressure. Low blood pressure patients can be adjusted under the guidance of the doctor’s treatment program to improve blood pressure is too low, and at the same time, the appropriate amount of use of some of the anti-blood coagulation, anti-thrombosis drugs to improve the ischemic parts. More than 75 years old, his high pressure can be controlled below 150mmHg, low pressure is not less than 70mmHg, with high pressure and low pressure added to the average pressure of 80mmHg or more to ensure that the blood vessels will not cause ischemia. The latest survey data show that at present, China has about 300 million patients with high blood pressure, new cases of high blood pressure each year amounted to 10 million. According to the data, about one-third of the hypertensive patients have the chance to have a cerebral hemorrhage, and about 95% of the patients with cerebral hemorrhage have high blood pressure. It is recommended that hypertensive patients must take medication according to the doctor’s instructions and control their blood pressure. In life, they should quit smoking and limit alcohol, eat a light diet with low salt, especially the elderly, have a calm mind, not too excited, great joy and great sorrow, moderate exercise, adequate sleep, and not overwork.