Family Health News published an article on September 3, 2008, "Experts pointed out: the use of drinking water therapy for hypertension patients can effectively control pressure." The article first introduces an old man''s experience of drinking water to lower blood pressure. The specific methods are as follows:

　　◆Wake up a cup of warm water every morning to get rid of bowel movements.

　　◆After going out for exercise in the morning, go home and drink a glass of water to replenish the water lost during exercise.

　　◆ In the afternoon, drink some water every hour.

　　 ◆Drink a glass of water before bathing, because an increase in body temperature during bathing can promote perspiration and discharge waste from the body.

　　◆Drink a little more water after bathing to replenish the water lost by the body.

　　 ◆ Drink a little water before going to bed to help remove toxins from the body.

　　The old man concluded that active drinking water, improving diet, active exercise, and certain medical treatments have kept my blood pressure well controlled in recent years.

　　 Strangely, the editor did not pay attention to "certain medical treatment" (that is well known), and directly concluded that "drinking water therapy can effectively control blood pressure" (this is more eye-catching). What makes it difficult for me to understand is that the expert who commented (the signature is still the director of the Department of Nutrition of a hospital affiliated to Shanghai Jiaotong University) actually said such an unexplained statement: "Reasonable water supplementation is particularly important for patients with hypertension. Because of excessive water intake Less will lead to insufficient blood volume, blood concentration, increased blood viscosity, and easy to induce the formation of cerebral thrombosis....... It is appropriate to drink 2500~3000 ml of water every day."

　　It is well known that diuretics (draining water) is one of the basic medications for the treatment of hypertension, because the blood pressure is related to the blood volume. For example, the pressure of the tap water in the water pipe is related to the entire water capacity. When every household releases water after cooking, because the water capacity drops, resulting in insufficient pressure in the pipe network, you will find that your own water flow becomes smaller; When everyone is not using water, the water capacity is sufficient. When you open the tap, you will find that the pressure is very high and the water flow is very fierce. The blood pressure in the blood vessels is the same. When the blood volume increases, the blood pressure will increase; conversely, when the blood volume decreases, the blood pressure will decrease (the most serious case is shock). This is the basis for diuretics to treat hypertension. From this, it is not difficult to understand that drinking a lot of water increases the blood volume, it is impossible to lower blood pressure, but it may increase blood pressure. In fact, for patients with low blood pressure, doctors or dietitians often recommend drinking more water (salt water is better).

　　 Therefore, in any case, drinking large amounts of water can not lower blood pressure, especially the "drink 2500~3000 ml of water every day" recommended by the expert and the "Chinese Dietary Guidelines 2007" issued by the Chinese Nutrition Society The recommendations (drinking 1200 ml of water daily) are obviously inconsistent. Besides, the blood pressure control of this old man is probably just the effect of antihypertensive drugs. There is no reason to drink more water to explain. To take a step back, even if he really lowered his blood pressure because of drinking water, this is just a case. People with a slight medical professional know that we cannot draw conclusions based on the case and promote it. At least there must be a preliminary epidemic. Scientific investigation or clinical experiment. In this report, we can''t see anything rigorous. Promoting drinking water therapy as a treatment for high blood pressure is easy to be accepted by the people (I don’t know why, many people would rather believe the unreliable method than the role of regular medicine). This is really the case. Of course, there is also a great possibility that the editor of the article misunderstood the meaning of the director of the nutrition department-my own opinions are often taken out of context by the reporters who interviewed me, and sometimes it is still very serious, such as the local "New Business" in Dalian. The reporter of the newspaper once wrote in the article: "Associate Professor Wang Xingguo said that the nutrition of chickens is certain. The fewer eggs it produces, the more nutrients in the eggs" (The reporter’s original intention was to write more farm eggs Nutrition)-I assure Chairman Mao that this is definitely not what I mean, hehe.