The kidneys are the organs that filter your blood, removing the waste materials and extra water that become urine. Some individuals are prone to the formation of kidney stones. These occur when certain minerals or other compounds accumulate at high levels in the urine. These materials can no longer remain dissolved and instead form solid crystals. While small crystals can leave the body through the urinary tract, larger ones may cause blockage and severe pain. Dietary factors can contribute to kidney stone formation.
Cola Recommendations
If you have a history of kidney stones, the National Institute of Diabetes and Digestive and Kidney Diseases recommends that you limit your caffeine intake to one or two servings per day. This includes cola as well as coffee, tea and other caffeinated beverages. To reduce your overall caffeine consumption, try to cut back gradually in order to minimize unpleasant side effects. For example, reduce your intake by one serving of cola and wait several days until your body adjusts. Then remove another serving until you reach your desired level.
Cola and Hydration
Drinking enough water will help to keep your urine dilute and reduce the buildup of compounds that form kidney stones. You should aim to pass 2.5 liters of urine per day. The National Institute of Diabetes and Digestive and Kidney Diseases recommends that you drink 12 full glasses of water each day. Cola and other caffeine-containing beverages may contribute to dehydration. If you live in a warm climate or exercise vigorously, you will need to drink even more water.
Other Foods to Avoid
Calcium oxalate stones are the most common type of kidney stones. If you tend to produce these stones, your doctor may recommend a low-oxalate diet. You should avoid chocolate, nuts, rhubarb, beets, okra, spinach, Swiss chard, sweet potatoes and soy. You should not take calcium supplements if you have a history of kidney stone formation. However, you can continue to drink milk and eat other calcium-rch foods. A diet that is low in salt and animal protein has been linked with a reduced risk of kidney stones.
Alternatives to Colas
Plain water is the healthiest substitute for cola. Try sparkling water or flavored varieties if you miss the flavor of cola. You can continue to drink caffeine-free sodas, such as ginger ale and lemon-lime varieties. Fruit juices are good alternatives to soda. They provide essential vitamins and minerals as well as help keep you hydrated. A study by researchers at the University of Texas Southwestern Medical Center has shown that orange juice is highly effective in preventing kidney stone recurrence. The citrate in orange juice appears to block stone formation.
