The disease of kidney stones must be well known to many people, because there are so many people suffering from kidney stones nowadays. There are many causes of kidney stones, and if you want to understand this disease, the first step to do is to understand its causes. Kidney stones are more harmful to the human body and can cause a variety of symptoms. 1, too much oxalic acid accumulation Too much oxalic acid in the body is an important cause of kidney stones. Oxalic acid exists in many foods, a small amount of intake will not have any effect on the body because the body can metabolize oxalic acid, but a large amount of long-term intake will lead to excessive oxalic acid in the body. Oxalic acid accumulates too much and combines with calcium to turn into kidney stones. 2, purine metabolism malfunction In addition to oxalic acid, purine in the body if very high, is also very dangerous, will lead to kidney stones. Purine mainly exists in the food we eat, such as a variety of meat, especially fatty meat, as well as seafood and soy products. A large amount of purines cannot be metabolized well by the body and then transformed into uric acid, leading to kidney stones. 3, too much fat intake We need to take in the right amount of fat every day, which is necessary to maintain the normal functioning of our body. But if you consume too much fat, it is not good for your health. When we consume too much fat, the body’s ability to absorb oxalate will become stronger, leading to oxalate deposits in the body, causing the situation of kidney stones. 4, too much protein Laboratory analysis of kidney stone components, found that the stones in calcium oxalate accounted for 87.5%. The source of such a large proportion of calcium oxalate is because in addition to glycine and hydroxyproline, the raw materials of oxalate, protein also promotes the absorption of calcium by the intestinal function. If high protein foods are consumed in excess on a regular basis, this results in a general increase in calcium, oxalic acid and uric acid in the kidneys and urine. If the excess calcium, oxalic acid and uric acid are not discharged from the body through the kidney function in a timely and effective manner, the conditions for kidney stones and ureteral calculi will be formed. This is the main reason for the increased incidence of kidney stones in economically developed countries in the world today. 5, sugar increase Sugar is an important nutrient for the human body, and should be added regularly in moderation, but too much at once, especially lactose, will also make the formation of stones to create conditions. Whether normal people or stone patients, after consuming 100 grams of sucrose, after 2 hours to check their urine, found that the concentration of calcium and oxalic acid in the urine are increased, if lactose is taken, it can promote the absorption of calcium, more likely to lead to the accumulation of calcium oxalate in the body and the formation of urinary stones.