There are many factors that cause kidney stones, such as metabolic disorders, hyperparathyroidism, urinary tract infections, obstruction or chemical factors, and many other unknown causes. Stones are classified into oxalate stones, phosphate stones, urate stones, calcium salt and cystine stones according to the main crystal components they contain. According to incomplete statistics in China, the composition of stones varies from region to region, but generally oxalate and phosphate stones are more common. Therefore, diet should be controlled according to the nature of stones. Oxalate stones: Most of them are produced from food, but some of them can also be produced by endogenous mechanism. The diet should prohibit vegetables with high oxalate content, such as spinach, amaranth, water spinach, green garlic, onion, wild rice, and various kinds of bamboo shoots. Oral administration of 5 mg of folic acid and 10 mg of pyridoxine can prevent the conversion of glycine to oxalic acid. Patients with these stones should drink more water. Phosphate stones: Since they are formed in alkaline urine, more acidic foods should be consumed, while limiting foods high in calcium. Acid-forming foods such as livestock and poultry meat, fish and shrimp, eggs, cereals and peanuts, etc. Uric acid stones: are caused by hyperuricemia, so foods containing high purine should be prohibited, such as animal offal, thick broth, mushrooms, peas, lobster, sardines, anchovies, roe, etc. You should eat more vegetables and fruits and drink more water to reduce the concentration of uric acid. Calcium salt stones: It is advisable to limit milk, cheese, shrimp, etc., which are high in calcium. More acid-forming foods, such as meat, poultry and eggs, should be eaten to make the urine acidic and drink plenty of water. Cystine stones: It is advisable to limit methionine and acidic foods (animal foods) and eat more alkaline foods (plant foods) to make the urine alkaline and drink plenty of water. About kidney stone diet health care 1, urinary tract stone patients should not eat more sugar urinary tract stone patients eat too much sugar, not only hinder the treatment, and will promote the further formation of urinary stones. It has been proven that the concentration of calcium ions in the urine, oxalic acid and the acidity of the urine will increase after taking sugar. Calcium and oxalic acid can promote the formation of stones, and the simultaneous increase of the three is more likely to form stones. The increase in acidity of urine can make calcium urate and calcium oxalate precipitate easily and promote stone formation. Therefore, patients suffering from kidney, ureteral and bladder stones should not eat more sugar. 2. urinary tract stone patients should not eat spinach
According to analysis, the most important component of urinary stones is calcium oxalate. Our urinary tract stone patients who have calcium oxalate as a component of the stone, accounting for about 87.5%. In normal times, a normal adult excretes 12 to 40 mg of oxalate from urine every day. If the amount of oxalate in food is too much and the urine is oversaturated with calcium oxalate, the extra calcium oxalate crystals may precipitate out of the urine and form stones. The highest oxalate content in food is in spinach, which is one of the vegetables that people often eat. So how does eating spinach change the amount of oxalic acid excreted in the urine? The researchers had a test on 10 healthy people, let them eat hot and fried spinach, and then measured the urine. As a result, after eating 200 grams of spinach, urinary oxalic acid excretion increased significantly, especially in the 2 to 4 hours after eating to reach a peak, 8 hours later still higher than the level before the test, than those who did not eat spinach increased oxalic acid 20-25 mg, close to the average amount of urinary oxalic acid in the general population 24 hours. The test also found that those who ate fried cooked spinach had higher urinary oxalic acid excretion than those who ate scalded spinach.
It can be seen that patients with urinary tract stones should not eat spinach again, because their urinary calcium oxalate itself is already in a state of oversaturation, if eaten again, it may aggravate the condition. If a patient with a urinary tract stone has been surgically removed, avoiding spinach can prevent recurrence. The actual fact is that you will be able to get a lot more than just a couple of days to get a lot more than just a couple of days.
In recent years, many people advocate drinking milk in the evening, the reason is that milk contains tryptophan, which helps sleep. This is undoubtedly appropriate for generally healthy people, but for kidney stone patients or those who have been cured, it is different. The reason is that after a person sleeps, the amount of urine decreases and various tangible substances in the urine increase, which can make the urine thicker. Since milk contains more calcium, most of the kidney stones contain calcium salts. The most dangerous factor for stone formation is the sudden increase of calcium concentration in the urine for a short time. Two to three hours after drinking milk, it is the peak of calcium elimination through the kidneys, so it is in the sleep state, urine concentration, calcium through the kidneys more, so easy to form stones. Therefore, patients with kidney stones should not drink milk before going to bed. In order to avoid this risk, you can drink at night 4 hours before going to bed. 4. In recent years, many reports talk about calcium supplementation, calcium intake increases, calcium excretion from urine increases, and high calcium urine increases the risk of kidney stones. High intake of oxalic acid, etc., can easily combine with calcium to form stones. However, it has also been reported that calcium ingested through the diet can combine with oxalic acid eaten at the same time to form calcium oxalate, which is excreted from the feces, in turn reducing the amount of oxalic acid that may be absorbed and, therefore, not increasing the risk of kidney stones. However, calcium supplements taken outside of the diet will not have this effect. Calcium supplements should be taken with special caution for people with a history of kidney stones.