How kidney stones form

Stone disease is a special disease that can occur in many parts of the body, and kidney stones are a typical example. After kidney stones appear, large ones will cause symptoms of soreness and discomfort in the lower back, while small ones will cause colic, which will not last long but will be paroxysmal. Kidney stones require a lot of treatment, especially when they reach a certain size, they require surgical treatment. It is best for us to know the cause and take active precautions. So, how do kidney stones form?

The large accumulation of oxalic acid in the body is one of the factors that lead to kidney stones. Foods that people generally like to eat, such as spinach, beans, grapes, cocoa, tea, oranges, tomatoes, potatoes, plums, bamboo shoots, etc., are foods with high oxalic acid content. Doctors have discovered through research that 200 grams of spinach contain 725.6 mg of oxalic acid. If a person eats 200 grams of spinach at one time, 8 hours after eating, the amount of oxalic acid excreted in the urine will be 20-25 mg, which is equivalent to the average total amount of oxalic acid excreted by a normal person in 24 hours.

Animal offal, seafood, peanuts, beans, spinach, etc. all contain more purine. After purine enters the body, it undergoes metabolism, and the final product of its metabolism is uric acid. Uric acid can promote the precipitation of oxalate in urine. If you eat too much purine-rich food at one time and the purine metabolism is abnormal, oxalate will be deposited in the urine and form urinary stones.

Meat from various animals, especially fatty pork, are foods high in fat. Eating too much will inevitably increase body fat. Fat will reduce the amount of calcium that can be bound in the intestines, thereby increasing the absorption of oxalate. If there is any excretion failure, such as sweating a lot, drinking less water, and less urine output, kidney stones are likely to form under this circumstance. Therefore, doctors often say that in order to prevent kidney stones, you should drink more water in hot weather and after eating oily foods, so as to promote urination and dilute the urine components, thus reducing the risk of kidney stones.

Sugar is an important nutrient for the human body and should be supplemented in appropriate amounts regularly. However, adding too much at once, especially lactose, can create conditions for the formation of stones. Whether normal people or stone patients, after consuming 100 grams of sucrose, their urine was checked 2 hours later, and it was found that the concentrations of calcium and oxalic acid in the urine increased. If lactose is taken, it can promote the absorption of calcium and is more likely to cause the accumulation of calcium oxalate in the body and form urinary stones.

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Excess protein, chemical analysis of the composition of kidney stones found that calcium oxalate accounted for 87.5% of the stones. The source of such a large proportion of calcium oxalate is that in addition to containing the raw materials of oxalic acid - glycine and hydroxyproline, protein can also promote the absorption of calcium by intestinal function.