I have just had a renal colic, how can I prevent urinary stones in the future?
If you live in a hot country, you might be at risk for urinary stones because of loss of body fluids and dehydration. In fact, the more you sweat, the less you urinate, which allows for stone-causing minerals to settle and bond in the kidneys and urinary tract.
One of the best measures you can take to avoid kidney stones is to drink plenty of water, leading you to urinate a lot.
Calcium oxalate the leading type of urinary stone. Most kidney stones are formed when oxalate binds to calcium while urine is produced by the kidneys. However, it is a common misconception that cutting the oxalate or calcium-rich foods in your diet alone will reduce the likelihood of forming calcium oxalate kidney stones. A diet low in calcium increases one's risk of developing kidney stones as well.
The correct approach would be to eat and drink calcium and oxalate-rich foods together during a meal instead. In doing so, oxalate and calcium are more likely to bind to one another in the stomach and intestines before the kidneys begin processing, making it less possible that kidney stones will form.
Oxalate is naturally found in many foods, including fruits and vegetables, nuts and seeds, grains, legumes, and even chocolate and tea. Some examples of foods that contain high levels of oxalate include peanuts, rhubarb, spinach, beets, chocolate and sweet potatoes.
Milk and his derivates are rich in calcium.
Moderating intake of these foods may be beneficial for people who form calcium oxalate stones.
Chronic kidney stones are often treated with potassium citrate, but studies have shown that limeade, lemonade and other fruits and juices high in natural citrate offers the same stone-preventing benefits. Beware of the sugar, though, because it can increase kidney stone risk. Instead, buy sugar-free lemonade, or make your own by mixing lime or lemon juice with water and using a sugar substitute if needed. In fact, that citrate in the urine may prevent the calcium from binding to other constituents that lead to stones. Also, some evidence suggests that citrate may avoid crystals that are already present from coupling with each other, thus preventing them from getting bigger.
In addition to calcium oxalate stones, another common type of kidney stones is uric acid stones. Red meat, organ meats, and shellfish have high concentrations of a natural chemical compound known as purines. High purine intake leads to a higher production of uric acid and produces a more significant acid load for the kidneys to excrete. Higher uric acid excretion leads to lower overall urine pH, which means the urine is more acidic. The high acid concentration of the urine makes it easier for uric acid stones to form. To prevent uric acid stones, cut down on high-purine foods such as red meat, organ meats, and shellfish, and follow a healthy diet that contains mostly vegetables and fruits, whole grains, and low-fat dairy products. Limit sugar-sweetened foods and drinks, especially those that contain high fructose corn syrup. Limit alcohol because it can increase uric acid levels in the blood and avoid crash diets for the same reason. Eating less animal-based protein and eating more fruits and vegetables will help decrease urine acidity and this will help reduce the chance of stone formation.
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