What should not be eaten with kidney stones

Written by Wang Shuai
Urology
Updated on March 10, 2025
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Patients with kidney stones do not have absolute dietary prohibitions. However, it is advisable to consume less food high in calcium, oxalates, and purines. Foods high in purines are mainly found in seafood, animal offal, beer, and beverages. High-calcium foods are primarily found in soy products and dairy products, such as soy milk, tofu, and cow's milk. Foods high in oxalates include celery, spinach, etc. These foods can be consumed in moderation in daily life, but should not be used in large amounts over a long period to avoid further growth and increase of stones. It is also important to drink plenty of water, urinate frequently, and engage in appropriate physical exercise to effectively prevent the occurrence of kidney stones. Additionally, for patients who have already developed kidney stones, it is necessary to timely decide on conservative stone expulsion or surgical treatment based on the size of the stones.

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Written by Wang Shuai
Urology
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Can kidney stones recur?

Kidney stones are recurrent because their formation is related to daily water intake, diet, genetics, lifestyle habits, and certain diseases. Therefore, even if the stones are treated surgically or expelled from the body through conservative means, recurrence can occur if dietary and lifestyle habits are not monitored or if the primary disease is not controlled. It is important to drink plenty of water, urinate frequently, and dilute the urine to reduce the recurrence of stones. If there are specific diseases present, such as hyperuricemia or hyperparathyroidism, active treatment is necessary.

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Written by Wang Shuai
Urology
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What department should I go to for kidney stones?

Kidney stones are a urological condition requiring treatment at a hospital's urology department. Diagnosis involves imaging, such as ultrasound or CT scans, to determine the stone's exact size and location for appropriate treatment. If the stone is relatively small, with a diameter of six millimeters or less, referred to as a small stone, it generally does not require special treatment. Increased fluid intake, frequent urination, and exercise can help facilitate the expulsion of the stone. If the stone's diameter is between 0.7 and 1.5 centimeters, extracorporeal shock wave lithotripsy or ureteroscopy may be considered. For larger stones exceeding 1.5 centimeters, possibly accompanied by hydronephrosis, the recommended treatments are percutaneous nephrolithotomy or open surgery for stone removal.

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Written by Chen Feng
Urology
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How can kidney stones be expelled from the body?

The method of expelling kidney stones from the body is related to the size of the stones. If the diameter of the kidney stone is less than 0.6 centimeters, it can generally pass smoothly through the ureter and urethra to the outside of the body. This can be facilitated by drinking plenty of water and performing physical activity to naturally expel the stones. If a stone gets stuck in a physiologically narrow part of the ureter during expulsion, conservative treatment methods can be used to dilate the ureter, allowing the stone to pass on its own. If the kidney stones are relatively large but do not cause obstruction within the kidney, they can be observed temporarily without treatment. If larger stones get stuck in the ureter or urethra and cannot be expelled on their own, surgery is generally required to remove the stones. After surgery, it is also important to drink plenty of water and urinate frequently.

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Written by Wang Shuai
Urology
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How to deal with kidney stones?

For the treatment of kidney stones, it is first necessary to determine the specific size and location of the stones, and whether there are conditions such as hydronephrosis or infection to guide the treatment approach. If the stones inside the kidney are relatively small, such as about five millimeters, conservative treatment is primarily used. This can involve drinking more water, urinating frequently, and exercising more. When necessary, oral medications like stone expulsion granules or solutions can be taken to help expel the stones from the body. If the stones are larger and accompanied by hydronephrosis or even infection, it is necessary to control the infection first and then proceed with surgical treatment. Common surgical methods include percutaneous nephrolithotomy, ureteroscopic lithotripsy, or open surgery for stone removal.

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Written by Zeng Zhong
Urology
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How big must a kidney stone be to require lithotripsy?

If the kidney stone is between 0.5 and 1.5 centimeters in size, extracorporeal shock wave lithotripsy is required. After the treatment, patients should drink more water, urinate frequently, and exercise more, such as running, jumping rope, and playing basketball, to facilitate the expulsion of the stones. Then, one week later, a follow-up visit to the hospital for an ultrasonic examination of the urinary system should be done to check the status of the stone expulsion. If the kidney stone is larger than 1.5 centimeters, minimally invasive surgery is required for stone disintegration, primarily using percutaneous nephrolithotomy with Holmium laser lithotripsy.