In and out of the clinic, numerous patients with stones, after recovery are curious, why am I prone to stones? Found that many patients are particularly interested in the dietary prevention of kidney stones, fusion of some online resources, asked some experts in preventive medicine, got the following conclusions, I hope to provide convenience for everyone. First of all, we understand that inorganic salts and uric acid are the products of normal metabolism of the human body, and these components are found in the urine of normal people. A factor in the formation of stones may come from the excess of inorganic salt crystals in the urine, when the crystals increase and gather, and gradually like a “snowball” as the increase in size, the formation of what is clinically known as urinary tract stones. However, we need to know that the vast majority of stones in the country are mixed composition stones, so dietary prevention has a certain role, but not pay attention to the diet can not grow stones. So, those are the correct general preventive measures for upper urinary tract stones? 1, drink more water. Drink more water” to prevent urinary tract stones, a long time has become a consensus, and confirmed by scientific research. Then how to drink water is considered “more”? Generally speaking, for the general population to prevent upper urinary tract stones, drink more water refers to the amount of urine a day to more than 2000ml, that is, equivalent to the amount of large bottles of Coke in the supermarket; for patients who have had a stone, after treatment to prevent recurrence, daily drinking water should ensure that the amount of urine more than 3,000ml, pay attention to drink less of all kinds of beverages, beverages are not only not a substitute for water, while the drinks contain a variety of coloring and food additives. The compliance of drinking water in this way needs a period of time to cultivate and establish such a habit. 2, eating habits: the most important thing is to eat a balanced diet, that is, there is nothing that can not be eaten, which is a misunderstanding of many patients, that this can not be eaten, that can not be eaten, this is not true. Nutritious food can be eaten, so that the diet reaches a mixed balance and avoids an excess of any one type of food. On this basis, pay attention to eat less high-fat, high-protein animal foods (including meat, fish, eggs, poultry, of course, eat less is not the same as not eating, to maintain the nutrition is still needed), eat more dietary fiber-rich grains and cereals, less salty, pickled food, eat more fresh vegetables and fruits. Eating according to such recommendations is not only beneficial to reduce the occurrence of stones, but also to the general health benefits. ① milk and dairy products: people with stones can also eat fresh milk and dairy products, but generally should not be consumed more than 500 ml per day (about 1 pound) of the amount. ② Tea: tea is not contraindicated for stone patients, and the habit of drinking tea will generally intake of more water, so the prevention of stone does not need to avoid drinking tea, but from the point of view of prevention of stones and general health or should not drink strong tea. ③ soy products: soy products belong to plant protein, good nutrition and good health; so far did not find consumption of soy products and stone formation has a direct relationship, therefore, as long as it is not excessive consumption or dietary preferences, soy products can be eaten without fear. Calcium: normal dietary calcium does not increase the incidence of stones, calcium intake can also be combined with oxalic acid in the intestinal tract, while dietary calcium is very important to ensure good health, calcium-containing foods do not need special control and taboo. But for stone patients, in the absence of special disease needs and physician guidance, should not be supplemented with calcium drugs and calcium preparations. ⑤ oxalic acid: some people say that “a certain vegetable, a certain fruit contains oxalic acid, easy to produce stones, can not eat ……”, in fact, it is not true, the human body 90% of the oxalic acid from the body metabolism of the conversion, only 10% from the diet, the epidemiological research did not find serum Epidemiologic studies have not found a clear correlation between serum oxalate and kidney stones. Therefore, moderate intake of vegetables and fruits does not increase the occurrence of urinary tract stones.