What can’t you eat if you have kidney stones? Lumbar stones are kidney stones. You should pay attention to the following points in your diet: 1. Eat less foods high in calcium. 2. Limit your intake of sugar. The intake of high-sugar foods can increase the chance of developing kidney stones. Therefore, Be careful to eat less sweets. 3. Eat less foods with high oxalate content. Foods with high oxalate content include tomatoes, spinach, strawberries, beets, chocolate, etc. Excessive oxalate intake is also one of the main causes of kidney stones. 4. Eat less soy products. Soy foods are high in oxalates and phosphates, which can combine with calcium in the kidneys to form stones. 5. Patients with kidney stones should not drink milk before going to bed. Because milk contains more calcium, most kidney stones contain calcium salts. The most dangerous factor for stone formation is a sudden increase in calcium concentration in the urine for a short period of time. 2 to 3 hours after drinking milk is the peak of calcium elimination through the kidneys. If you are sleeping at this time, the urine is concentrated and more calcium passes through the kidneys, so stones are easy to form. Therefore, patients with kidney stones should not drink milk before going to bed. 6. Excessive protein. Laboratory analysis of the components 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 the raw materials containing oxalic acid-glycine and hydroxyproline in protein, protein can also promote the absorption of calcium by intestinal function. If you often eat excessive amounts of high-protein foods, the calcium, oxalic acid, and uric acid components in the kidneys and urine will generally increase. If excess calcium, oxalic acid, and uric acid cannot be excreted from the body through kidney function in a timely and effective manner, the conditions for kidney stones and ureterolithiasis will be formed. This is the main reason why the incidence of kidney stones in developed countries in the world has increased. People who often eat late are more likely to develop kidney stones. This is because the main component of kidney stones is calcium, and apart from part of the calcium contained in food being absorbed by the body through the intestinal wall, the excess is excreted in the urine. The highest peak of people's urination is usually 3-5 hours after a meal. If dinner is too late, people generally stop doing activities, so all the urine produced after dinner remains in the urinary tract, so that the urine in the urinary tract The calcium content continues to increase, and over time, stones are formed. So I suggest you not to have dinner too late.