Chronic nephritis can occur at any age, but is predominantly seen in young and middle-aged adults, and is more common in men. Most of them have a slow and insidious onset. The clinical manifestations are diverse, with proteinuria, hematuria, hypertension, and edema as its basic clinical manifestations, and there may be varying degrees of renal hypofunction, with the condition being mild and severe at times, delayed, and progressive development to chronic renal failure. What kind of harm does chronic nephritis do to the human body? The chronic nephritis of the human body is a variety of hazards, chronic nephritis can make the human body’s digestive system of the accumulation of urea into the digestive tract, intestinal bacteria in the role of urease will form ammonia, can stimulate the gastrointestinal mucosa caused by fibrinous inflammation, the formation of ulcers and bleeding; chronic nephritis will make the heart and lungs become edema, due to renal hypertension long-term effect on the heart can cause heart failure and pulmonary edema; chronic nephritis will make the hematopoietic Chronic nephritis can make the hematopoietic system in the erythropoietin deficiency, coupled with a variety of toxins on the inhibition of bone marrow hematopoietic function, can lead to the emergence of anemia; chronic nephritis will make the intestinal absorption of calcium decreased, resulting in patients with low blood calcium. Long-term reduction of blood calcium can cause general decalcification of bone tissue, with clinical manifestations such as cramps, osteoporosis and bone pain; patients have dry, grayish-yellow skin with pruritus, the cause of which is still unclear and may be related to the stimulation of nerve endings by urea. Patients with chronic nephritis should also eat a light and easily digestible low-salt or salt-free diet when they are swollen, have little urine, or have a poor diet. As the condition improves, the amount of urine increases and the swelling subsides, in order to replace the large amount of protein lost in the urine in a timely manner, you can gradually transition to a high-quality high-protein diet. If accompanied by anemia, iron-rich foods can be used, such as animal blood, animal liver, lean meat, dates, black beans, black fungus, sesame paste, etc. When chronic nephritis further develops into renal insufficiency and uremia, in addition to strictly limiting protein, water intake should also be strictly limited. If there is oliguria (less than 300 ml of urine per day), then foods with high potassium content such as kelp, nori, animal offal, bananas, etc. should also be avoided. Foods high in calories and low in protein can also be used as the main source of energy in the diet, such as potatoes, yams, taro, groundnuts, lotus root, vermicelli, lotus root powder, etc. to supplement calories and reduce the breakdown of protein in the body. In addition, foods and condiments that are irritating to the kidneys, such as alcohol, mustard and pepper, should also be noted. Chronic nephritis patients can effectively improve their resistance to disease and reduce infection through appropriate physical exercise, which can also improve the blood circulation of the internal organs and promote the repair of damaged parts of the body and the discharge of metabolic waste.