Sports drinks do not automatically cause kidney stones, but drinking large amounts of some sports drinks may contribute to kidney stone risk in certain people. The main concerns are excess sodium, added sugar, and replacing water with beverages that may not be necessary for everyday hydration.
Kidney stones form when certain minerals and other substances become highly concentrated in the urine and form crystals. Not drinking enough fluid is an important risk factor, which means staying properly hydrated is one of the most effective ways to reduce the chance of stones.
For most people doing ordinary daily activities or moderate exercise, water is usually the simplest choice for hydration. Sports drinks can have a role during prolonged or intense exercise, especially when substantial fluid and electrolyte losses occur, but they should not necessarily replace water throughout the day.
How Could Sports Drinks Affect Kidney Stone Risk?
The relationship depends largely on the ingredients in the drink and the person’s overall diet and hydration.
Sodium
Some sports drinks contain sodium to help replace electrolytes lost through sweat. Sodium itself does not directly turn into a kidney stone, but consuming too much sodium can increase the amount of calcium excreted in urine.
Higher urinary calcium can increase the likelihood of calcium-containing kidney stones in people who are susceptible. The National Institute of Diabetes and Digestive and Kidney Diseases recommends limiting sodium as part of kidney-stone prevention.
This does not mean that every sports drink is high enough in sodium to cause a problem. The amount varies considerably among products, so checking the nutrition label is useful.
Added Sugar
Many traditional sports drinks contain added sugars. Excessive consumption of sugary beverages is not ideal for overall health and may be associated with factors that increase kidney-stone risk.
The National Kidney Foundation recommends water as the preferred beverage for kidney-stone prevention and advises limiting sugary beverages.
A sports drink consumed occasionally during a long workout is very different from drinking several sugary sports drinks every day.
Hydration
Hydration is especially important because dehydration can make urine more concentrated. When urine becomes concentrated, substances that can form stones have a greater opportunity to crystallize.
NIDDK identifies drinking enough liquid—mainly water—as the most important dietary measure for preventing kidney stones.
Ironically, someone exercising heavily in hot weather may be at greater risk of dehydration if they do not replace fluids adequately. The goal should therefore be adequate hydration rather than simply avoiding sports drinks.
Are Sports Drinks Better Than Water for Preventing Kidney Stones?
For general hydration, water is usually the preferred option.
NIDDK states that drinking enough liquid, mainly water, is the most important step for preventing kidney stones. The National Kidney Foundation also recommends water as the best choice and notes that people exercising or sweating heavily may need additional fluid.
Sports drinks can be useful in particular circumstances, such as prolonged, strenuous exercise where substantial fluid and electrolyte losses occur. But for a short workout or normal daily activities, most people do not need to rely on sports drinks for hydration.
Can Sports Drinks Cause Kidney Stones if You Drink Them Every Day?
Regularly drinking sports drinks does not mean that you will develop kidney stones. However, consuming large amounts every day may be less desirable if the beverages contribute substantial sodium or added sugar to your diet.
Your overall kidney-stone risk also depends on factors such as:
- How much fluid you drink
- Your total sodium intake
- Your diet
- Your body weight
- Family history
- Previous kidney stones
- Certain medical conditions
- The type of kidney stone you form
People who have already had kidney stones have a greater chance of developing them again.
What About Zero-Sugar Sports Drinks?
Zero-sugar sports drinks remove or reduce one concern—added sugar—but they are not automatically the best choice for everyone.
Some still contain sodium and other electrolytes. Whether that matters depends on the product, how much you consume, and your individual health and dietary needs.
If kidney-stone prevention is the goal, the overall pattern of hydration and diet matters more than simply choosing between regular and zero-sugar sports drinks.
Can Electrolyte Drinks Help Prevent Kidney Stones?
Electrolyte drinks should not be considered a general treatment for kidney stones.
The most important hydration goal is to produce enough dilute urine. Water is usually the simplest way to accomplish this. People who exercise heavily or sweat significantly may have different fluid and electrolyte needs, but those needs do not mean that sports drinks are required to prevent stones.
Certain citrus beverages may contain citrate, which can help prevent crystals from forming in some circumstances. However, this does not mean every electrolyte or sports drink provides the same benefit.
Do Sports Drinks Cause Kidney Stones in Athletes?
Athletes can develop kidney stones, but the sports drink itself should not automatically be blamed.
Exercise can increase fluid loss through sweating, particularly during long workouts, outdoor training, or hot weather. If fluid replacement is inadequate, urine becomes more concentrated, which can increase stone risk.
For athletes, maintaining adequate hydration is therefore important. The National Kidney Foundation specifically notes that heavy exercise and sweating can contribute to dehydration and recommends maintaining adequate fluid intake.
The appropriate beverage depends on exercise intensity, duration, environmental conditions, and individual needs.
How Much Water Should You Drink to Prevent Kidney Stones?
There is no single amount that is appropriate for everyone. Fluid needs vary with body size, activity, climate, sweating, medical conditions, and other factors.
NIDDK notes that many healthcare professionals recommend six to eight 8-ounce glasses of liquid per day for people without kidney failure, while also explaining that people who exercise or live in hot conditions may need more.
People who have previously formed stones may receive individualized fluid targets from their healthcare professional, sometimes based on urine volume.
The important principle is to avoid becoming dehydrated and to maintain adequate urine production.
How to Reduce Your Risk of Kidney Stones
If you are concerned about kidney stones, several practical habits can help.
Drink Enough Water
Make water your primary source of hydration. Adequate fluid helps dilute urine and reduce the concentration of stone-forming substances.
Watch Your Sodium Intake
Excess sodium can increase urinary calcium and may raise the risk of calcium stones. Check nutrition labels on packaged foods and beverages.
Limit Excess Sugary Drinks
Avoid relying heavily on sugary beverages, including sports drinks, when you do not need them for exercise-related hydration.
Stay Hydrated During Exercise
Drink enough fluid when exercising, particularly during long workouts, hot weather, or activities that cause heavy sweating.
Know Your Stone Type
If you have already had a kidney stone, the type of stone matters. Dietary recommendations can differ depending on whether the stone was calcium oxalate, calcium phosphate, uric acid, cystine, or another type.
When Are Sports Drinks Useful?
Sports drinks can have a practical role when you are exercising intensely or for a prolonged period and losing significant amounts of fluid and electrolytes through sweat.
For example, an endurance athlete exercising for an extended period in hot weather may have different hydration needs from someone taking a short walk.
The key is not to treat sports drinks as inherently harmful or necessary. Their usefulness depends on the situation and the nutritional content of the particular product.
What If You Already Have Kidney Stones?
If you currently have a kidney stone, your fluid and dietary needs may depend on the stone’s size, location, type, kidney function, and symptoms.
NIDDK notes that healthcare professionals may recommend plenty of liquids to help small stones pass when appropriate, but larger stones or stones causing obstruction or severe symptoms may require medical treatment.
If you have severe pain, blood in your urine, difficulty urinating, fever, chills, nausea, or vomiting, seek medical attention. These symptoms can occur with kidney stones and may sometimes indicate a more serious problem.
Frequently Asked Questions
Can sports drinks directly cause kidney stones?
There is no simple rule that sports drinks directly cause kidney stones. However, frequent consumption of drinks high in sodium or sugar may contribute to dietary factors associated with stone risk, particularly in susceptible people.
Is water better than sports drinks for kidney stones?
Generally, yes. Water is the preferred source of hydration for kidney-stone prevention. Sports drinks may be useful during prolonged or intense exercise when substantial fluid and electrolyte losses occur.
Can drinking too many sports drinks cause kidney problems?
Excessive consumption can add substantial sodium and sugar to the diet, depending on the product. People with kidney disease or other medical conditions should discuss appropriate fluid and electrolyte intake with a healthcare professional.
Are sugar-free sports drinks safer for kidney stones?
Sugar-free versions may reduce added-sugar intake, but they can still contain sodium and other ingredients. Check the nutrition label and consider your overall diet and hydration needs.
Should people with kidney stones avoid sports drinks?
Not necessarily. The right choice depends on the person’s stone type, overall diet, exercise level, hydration needs, and medical advice. Water is generally the preferred everyday beverage.
Can dehydration from exercise cause kidney stones?
Dehydration can increase kidney-stone risk because it reduces urine volume and makes urine more concentrated. Staying adequately hydrated is especially important during heavy exercise and hot weather.
What is the best drink to prevent kidney stones?
Water is generally the best everyday choice. Some citrus beverages containing citrate may also be helpful for certain people, but recommendations can depend on the type of stone and individual health circumstances.
Conclusion
So, can sports drinks cause kidney stones? Sports drinks are not automatically a cause of kidney stones, but frequent or excessive consumption of certain products may contribute to risk through sodium, added sugar, or inadequate overall hydration.
For most people, water is the simplest and most reliable choice for everyday hydration. During prolonged or intense exercise, sports drinks may be useful for replacing fluids and electrolytes lost through sweat.
If you have a history of kidney stones, focus on adequate hydration, moderate sodium intake, and a diet suited to your specific stone type. If you repeatedly develop stones or have significant symptoms, a healthcare professional can help identify the underlying risk factors and create an appropriate prevention plan.
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