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Kidney stones are one of the most common kidney disorders seen in both men and women today. Factors such as a busy lifestyle, insufficient water consumption, and unbalanced nutrition make stone formation increasingly more common. Minerals accumulating in the kidneys or urinary tract harden over time and lead to a painful and uncomfortable condition. This condition can seriously reduce quality of life and may negatively affect kidney functions if left untreated. However, with proper nutrition, adequate fluid intake, and regular application of natural methods, it is possible to prevent stone formation and help existing stones pass more easily.
What Is a Kidney Stone and Why Does It Form?
A kidney stone is a hard mass formed when mineral and salt crystals accumulating inside the kidneys or urinary tract combine over time and turn into a solid structure. It usually occurs as a result of excessive accumulation of substances such as calcium, oxalate, uric acid, and phosphate in the urine. The main function of the kidneys is to filter waste products from the blood and remove excess water from the body as urine. However, in some cases, minerals in the urine begin to accumulate at high levels. This condition prepares the ground for crystallization and stone formation over time.
Insufficient water consumption, an excessively salty and protein-heavy diet, a sedentary lifestyle, and genetic factors are among the main causes of stone formation. Especially in summer months, as fluid loss in the body increases, urine becomes more concentrated and the risk of stone formation rises. In addition, metabolic disorders, gout disease, or overactivity of the parathyroid gland may also facilitate the development of kidney stones. Although kidney stones can be seen at any age, they are more common in men than women. The reason for this is hormonal differences and dietary habits.
What Are the Symptoms of a Kidney Stone in the Canal?
Kidney stone symptoms vary according to the size and location of the stone and the degree of obstruction it creates in the urinary tract. The most characteristic symptom is severe pain, often felt on the side of the lower back. This pain usually starts suddenly and may spread toward the groin in waves. A burning sensation during urination, frequent urination, blood in the urine, and cloudy or foul-smelling urine are also common symptoms.
In some patients, nausea and vomiting also accompany the condition. The reason for this is reflex mechanisms accompanying the pain. As the stone moves in the urinary canal, the location of the pain may change and its severity may increase over time. If the stone completely blocks urine flow, the kidney may swell and this condition may lead to a serious infection. Therefore, it is extremely important to consult a doctor when symptoms begin. Early intervention ensures both pain control and preservation of kidney functions.
What Are the Types of Kidney Stones?
Kidney stones may have different chemical compositions. The most common type is calcium oxalate stone. These stones usually form when there are high calcium and oxalate levels in the urine. Calcium stones are not related to excessive calcium intake in the diet, but to genetic predisposition and metabolic imbalances.
Uric acid stones are more common in those following a protein-rich diet and in people with gout disease. An acidic urine environment facilitates the formation of these stones. Struvite stones usually develop as a result of urinary tract infections. They are more common in women and can grow rapidly. Cystine stones occur as a result of a genetic disorder; stones form when the excretion of an amino acid called cystine in the urine increases.
Each of these stone types requires different treatment and prevention methods. Therefore, starting treatment without chemical analysis of the stone may cause the disease to recur.
What Diseases Cause Kidney Stone Formation?
Kidney stone formation is not only a result of incorrect dietary habits; some diseases may also directly affect this process. Hyperparathyroidism is an important endocrine disorder that disrupts calcium balance in the body. Excessive secretion of parathyroid hormone causes calcium to pass from the bones into the blood, which leads to an increase in calcium levels in the urine. As a result, calcium accumulation in the kidneys increases and stone formation becomes easier. Gout disease similarly prepares the ground for stone formation; because the increase in uric acid levels in the blood causes crystallization in the urine and especially triggers the formation of uric acid stones.
Apart from this, urinary tract infections may change the chemical structure of urine and cause the development of struvite stones. This condition, which is more common especially in women, occurs when bacteria increase the ammonia level in the urine. Chronic intestinal diseases disrupt mineral balance by causing absorption disorders and increase oxalate absorption. Long-term dehydration causes urine to become concentrated and crystals to accumulate more easily. In addition, genetic factors play an important role in stone formation. People with a family history of kidney stones have a much higher stone risk due to metabolic tendency. Therefore, individuals with such diseases should take care to drink plenty of water, have regular tests, and regulate their lifestyle habits under doctor supervision. In this way, stone formation can be prevented at an early stage and kidney health can be preserved.
Are Kidney Stones Dangerous?
Kidney stones are a disorder that can lead to serious health problems if left untreated. Small stones can usually be passed out of the body spontaneously with urine; however, as the size of the stone increases, the risk also increases. Large stones cause obstruction in the urinary tract, leading to pressure accumulation inside the kidney. This condition is called hydronephrosis in medicine and may damage kidney tissue in the long term. In addition, since the obstruction created by the stone prepares the ground for urine accumulation and bacterial growth, the possibility of infection also increases. In case of infection, symptoms such as fever, chills, fatigue, and burning during urination usually occur.
Kidney stones that are untreated or noticed late may cause a decrease in kidney functions over time and even kidney failure. Therefore, the size, structure, and location of stones must be evaluated in detail. When necessary, removal of the stone with surgical methods prevents permanent kidney damage. Early diagnosis, regular medical follow-up, and appropriate treatment approaches are of great importance for the kidneys to continue functioning healthily.
How Do Kidney Stones Pass?
Kidney stones may be eliminated naturally from the body or may require medical intervention depending on their size and location. Small stones usually pass spontaneously with urine. The most important factor in this process is adequate fluid intake. Water increases the volume of urine and helps the stone move comfortably in the urinary canal. However, if the stone diameter is larger than 5 millimeters, passing it may be more difficult. In this case, medications that relax the muscles in the area where the stone is located may be used.
The process of passing kidney stones varies from person to person. Some stones are expelled within a few days, while some may remain stuck in the canal for weeks. During this period, pain waves occur with the movement of the stone. When the stone passes from the kidney into the urinary canal, the severity of pain increases; as it approaches the bladder, it usually decreases. During this process, painkillers and medications that widen the urinary tract provide support.
In some cases, the stone may completely prevent urine from passing. Such obstructions require emergency intervention. Doctors apply different treatment methods according to the size of the stone. One of the most common methods is the ESWL (extracorporeal shock wave lithotripsy) technique. In this method, stones are broken into small pieces with high-frequency sound waves and their passage with urine becomes easier. For larger or complex stones, surgical methods such as ureteroscopy or percutaneous nephrolithotomy are preferred.
Apart from medical treatment, lifestyle and dietary habits are also quite effective in the stone-passing process. Increasing fluid intake, avoiding caffeinated drinks, reducing salt consumption, and moving regularly make passing stones easier. In addition, following a diet suitable for the chemical structure of the stone reduces the risk of recurrence.
What Are the Most Comfortable Ways to Pass Kidney Stones?
The easiest ways to pass kidney stones include natural methods, medical supports, and lifestyle changes. The most important and effective method is consuming plenty of water. Water dilutes minerals in the kidneys and increases urine flow, making movement of the stone easier. Drinking at least two and a half to three liters of water a day accelerates the stone-passing process. However, water should not be drunk all at once but spread throughout the day.
Herbal supports are also quite useful in the stone-passing process. Parsley juice, lemon water, and an olive oil-lemon mixture cure have a relaxing effect on the urinary tract. Thanks to the citric acid it contains, lemon may facilitate the dissolution of calcium stones. In addition, apple cider vinegar and pomegranate juice increase the detox effect of the kidneys and regulate urine pH balance. However, such natural mixtures should not be consumed in excessive amounts without doctor supervision.
The role of diet in passing stones is significant. Especially excessive consumption of foods high in oxalate such as salt, red meat, chocolate, spinach, and hazelnuts increases stone formation. Instead, a diet rich in vegetables, fruits, and whole grains should be followed. Completely eliminating calcium intake is not recommended; because low calcium intake may cause the body to absorb more oxalate. Balance is very important at this point.
Physical activity also facilitates passing stones. Light-paced walks help the stone move in the urinary canal. Especially consuming plenty of fluids during exercise may shorten the time it takes for the stone to pass. Regular medical follow-up should not be neglected during this process. The doctor evaluates the location of the stone with ultrasound or tomography and provides medication support if necessary.
One of the common mistakes made while passing kidney stones is using too much medication to relieve pain. Painkillers provide temporary relief but do not prevent the stone from progressing. Therefore, the most correct approach is balanced nutrition, adequate water consumption, and treatment in accordance with doctor recommendations. In this way, the stone-passing process becomes both more comfortable and safer.
How Is Kidney Stone Formation Prevented?
Preventing kidney stone formation is a much easier and more effective approach than treatment. Preventive measures prevent both the formation of new stones and the recurrence of existing stones. The most basic measure is increasing daily fluid consumption. Urine being light-colored and clear shows that the body is getting enough water. Drinking at least 2–3 liters of water a day allows the kidneys to function more efficiently.
Dietary habits are a determining factor in stone formation. Excessive salt, protein, and sugar consumption increases mineral accumulation in the kidneys. Therefore, a balanced nutrition plan should be followed. Excessive consumption of foods containing oxalate (spinach, beetroot, chocolate, walnuts, potatoes) especially prepares the ground for calcium oxalate stones. These foods are not completely prohibited but should be consumed in a controlled manner.
Keeping calcium intake balanced is also important. Low-calcium diets may increase stone risk instead of reducing it. The reason for this is that the body absorbs more oxalate from the intestines. Therefore, natural calcium sources such as milk and yogurt should be included in daily nutrition.
In addition, excessive consumption of caffeinated drinks, carbonated sodas, and alcohol contributes to stone formation by disrupting the acidic structure of urine. Instead of these drinks, water, herbal tea, and natural fruit juices should be preferred. Regular exercise preserves the metabolic balance in the body and prevents stone formation. Excessive inactivity may negatively affect kidney functions.
In addition to healthy lifestyle habits, people with genetic predisposition are advised to have regular kidney ultrasound examinations. In this way, stone formation is noticed at an early stage and can be treated before it grows. Doctors usually evaluate the stone risk with urine analysis and blood tests.
Finally, unconscious herbal mixtures should be avoided. Not every natural product is beneficial, and some may cause stones to grow. Therefore, the stone prevention process should be carried out with a personalized plan based on scientific foundations.
The Role of Lifestyle and Environmental Factors in Kidney Stone Formation
The development of kidney stones is not caused only by genetics or diseases; an individual’s lifestyle and environmental conditions are also greatly effective. Insufficient water consumption causes the body to be unable to excrete enough minerals through urine and increases the concentration of urine, preparing the ground for stone formation. Eating excessively salty, fatty, and processed foods disrupts the mineral balance in the body and causes calcium and oxalate to accumulate in the urine. A sedentary lifestyle negatively affects the blood circulation of the kidneys and makes the accumulation of metabolic wastes easier.
In addition, people living in hot climates are more prone to stone formation because they lose more fluids through sweating. Insufficient fluid intake causes the risk to increase especially in summer months. Excessive protein consumption also contributes to urine becoming acidic and the formation of uric acid stones. Frequent consumption of caffeinated and carbonated drinks disrupts the pH balance of urine and negatively affects the working order of the kidneys. Regular exercise, adequate water-drinking habits, and balanced nutrition significantly reduce the risk of kidney stone formation. Adopting a healthy lifestyle is one of the most effective protective methods against stone disease.
Prof. Dr. Berkan Reşorlu, born in Ankara in 1979, completed his medical education at Ankara University between 1997 and 2003, and his specialization in urology at Ankara University Faculty of Medicine between 2003 and 2008. Academically, he received the title of associate professor in 2013 and professor in 2022.
He has conducted extensive case series studies in the field of endoscopic stone surgery, contributed surgeries performed on children under the age of 1 to the literature, and has gained international recognition with his stone scoring system and experimental surgical models.
