In the early days of human medicine, there was a very effective way to deal with hypertension, which was bloodletting, and blood pressure naturally dropped when blood volume was reduced. However, this simple and brutal treatment could not become the standard treatment for lowering blood pressure. Bloodletting was gradually abandoned by mankind, only in some remote areas and underdeveloped areas may still be used. By the early 20th century, it was discovered that the salt eaten in food and blood volume were closely related. By more than 60 years ago, a great scientist emerged, the German Professor kampner. He did a very interesting and important experiment of giving hypertensive patients an extremely low salt diet, eating about less than 1 gram of salt per day, which later became known as the kampner diet. You know, now the World Health Organization recommended salt is not more than 6 grams per day, even to achieve this goal is already very difficult, kampner Professor’s patients must be a million reluctant ah. However, this approach was quite effective, and after a few weeks, as urine and sweat expelled the excess sodium from the body, the blood volume dropped significantly, and the blood pressure of most patients dropped to normal, knowing that more than 60 years ago there was no antihypertensive drugs, and even the first diuretics used to lower blood pressure were only in the clinical trial stage. It seems that as long as the sodium in the body to find ways to lower, lowering blood pressure is not a problem. But Professor Kampner’s experiments are normal kidney function, these people can sweat and urinate, excess sodium can be excreted. But we have chronic kidney disease, especially kidney failure patients urination is reduced, sweating is also reduced, the ability to excrete sodium from the body is reduced. In addition, some scientists have proved through animal experiments that the body’s sensitivity to salt increases in the state of chronic kidney disease, that is, the same 8 grams of salt, the normal kidney function can dispose of the excess salt to ensure that no hypertension, while the abnormal kidney, it can not handle, it is easy to appear hypertension. Therefore, for patients with chronic kidney disease, the relationship between salt and hypertension is very close, and the fundamental and core of antihypertensive treatment lies in the control of salt. Of course, salt control is not a one-day effort, and it is difficult to correct years of dietary habits. It is a sustainable strategy to lower blood pressure by communicating with a nutritionist and setting reasonable salt control goals according to your dietary preferences.