Kidney Stones: Which Type of Food Should Be Avoided?

Kidney stones are formed from certain substances, such as phosphate, oxalate, and calcium that are found in high concentrations in the urine. There are several factors that are associated with the formation of kidney stones, like obesity, poor diet, low fluid intake, genetic, and so on.

There are 4 types of kidney stones:

  • Calcium stones
  • Uric acid stones
  • Struvite stones
  • Cystine stones

Depending on the type of kidney stone you are suffering from, you should follow a specific diet, such as:

– Calcium stones

In case you are suffering from this type of kidney stones, it is advisable to reduce your intake of sodium, animal protein, high-oxalate foods, and take an adequate amount of calcium.

In other words, you should avoid consuming fast food, hot dogs, canned food, frozen processed food, salami, bacon, etc., since they are high in sodium.

Furthermore, lower your consumption of spinach, black tea, cola, chocolate, nuts, coffee, etc., as they are abundant in oxalate.

However, when it comes to adequate calcium intake, you should not exceed the recommended daily amount of calcium, or take the supplements along with your meal.

– Uric acid stones

If you are suffering from this kidney stone type, it is recommended to decrease your purine intake, i.e., eggs, meat, fish, dairy products, tofu, soy, lentils, etc., as these foods are rich in purines.

– Struvite stones

As a result of the fact that this type of kidney stone is triggered by a kidney infection, first of all, the stones should be eliminated. Then, you should start treating the infection.

– Cystine stones

This condition can be treated by consuming plenty of water and other fluids as well as a lot of alkaline foods. 

Bonus Tips:

If you have ever suffered from kidney stones, it is highly recommended to drink at least 2 liters of water on a daily basis.

Citrus beverages, such as fresh lemonade and orange juice can help prevent  the formation of calcium oxalate kidney stones thanks to their high citrate content, but they may have negative effects in those suffering from calcium phosphate stones.

Calcium oxalate stone sufferers should avoid consuming tea and coffee, whereas those suffering from the other types of kidney stones can drink these beverages only in moderation.