Kidney Stones & Urinary Health: What You Should Know

Kidney stones can be extremely uncomfortable, especially when a stone moves from the kidney into the urinary tract. They can cause sharp pain, changes in urination, nausea, and other symptoms that may appear suddenly.

The good news is that many kidney stones are small enough to pass naturally. However, larger stones can become lodged in the urinary tract and may require medical treatment.

Understanding how kidney stones develop, recognizing the warning signs, and knowing how to support urinary health can help you make informed decisions about your health.

What Are Kidney Stones?

Kidney stones are hard, crystal-like deposits that form inside the kidneys.

Urine contains minerals and other substances that are normally dissolved in fluid. When certain substances become concentrated, they can begin to form tiny crystals. Over time, these crystals may collect together and become a stone.

Kidney stones can range from very small particles to larger stones that may be difficult to pass.

Some stones remain in the kidney without causing noticeable symptoms. Others move into the ureter, the narrow tube that carries urine from the kidney to the bladder.

When a stone travels through the urinary tract, it can cause significant pain.

What Causes Kidney Stones?

Several factors can increase the likelihood of developing kidney stones.

One of the most important is not drinking enough fluid. When urine becomes highly concentrated, substances that can form crystals may become more likely to accumulate.

Other possible factors include:

• Family history of kidney stones

• Certain dietary patterns

• High intake of sodium

• Some medical conditions

• Certain medications

• Obesity

• Repeated dehydration

• Previous kidney stones

• Certain metabolic conditions

The exact cause can vary from person to person.

Common Types of Kidney Stones

Not all kidney stones are made from the same substances.

Calcium Stones

Calcium stones are the most common type. They are often made from calcium combined with substances such as oxalate or phosphate.

Despite their name, calcium stones do not necessarily mean that a person consumes too much calcium.

Uric Acid Stones

Uric acid stones can develop when urine contains high levels of uric acid.

Certain dietary patterns and medical conditions can increase uric acid levels.

Struvite Stones

Struvite stones are associated with certain urinary tract infections.

They can sometimes develop quickly and may become relatively large.

Cystine Stones

Cystine stones are uncommon and are associated with a rare inherited condition that causes increased levels of cystine in the urine.

Knowing the type of stone can help healthcare professionals determine appropriate prevention strategies.

What Does a Kidney Stone Feel Like?

A kidney stone may cause intense pain, although symptoms can vary depending on its size and location.

Pain commonly occurs in the side or back below the ribs and may move toward the lower abdomen or groin.

The pain may come in waves and fluctuate in intensity.

Some people describe kidney stone pain as severe, sharp, cramping, or difficult to ignore.

Other possible symptoms include:

• Pain or burning during urination

• Frequent urge to urinate

• Urinating only small amounts

• Pink, red, or brown urine

• Cloudy or unpleasant-smelling urine

• Nausea

• Vomiting

• Restlessness caused by discomfort

Not everyone experiences all of these symptoms.

When Kidney Stones Become an Emergency

Most kidney stones are not life-threatening, but certain symptoms require urgent medical attention.

Seek prompt medical care if you have severe pain accompanied by fever or chills, because a blocked urinary tract combined with an infection can become serious.

You should also seek urgent attention if you:

• Cannot urinate

• Have persistent vomiting

• Develop a high fever

• Feel faint or extremely weak

• Have severe or worsening pain

• Have significant blood in your urine

• Have only one functioning kidney and develop possible stone symptoms

Pregnant people and individuals with significant kidney problems should also seek individualized medical advice promptly when kidney stone symptoms occur.

Why Hydration Matters

Drinking enough fluid is one of the most important general habits for reducing kidney stone risk.

When you are well hydrated, your urine is more diluted, which can make it harder for certain crystal-forming substances to become highly concentrated.

Water is generally the simplest choice.

Your fluid needs vary depending on factors such as body size, activity level, climate, diet, and health conditions.

Instead of focusing only on a specific number of glasses, pay attention to your overall hydration and follow medical advice if you have been given fluid restrictions.

People with certain heart or kidney conditions may need individualized guidance about how much fluid is appropriate.

Can Lemon Water Help?

Citrus fruits contain citrate, a substance that can help prevent certain types of kidney stones from forming.

Adding lemon or lime to water can make it more enjoyable and may increase fluid intake.

However, lemon water is not a cure for existing kidney stones.

If you have recurring stones, your healthcare professional can determine whether increasing dietary citrate is appropriate for your particular type of stone.

How Diet Can Affect Kidney Stone Risk

Diet can influence kidney stone formation, although the ideal diet depends partly on the type of stone.

Watch Your Sodium Intake

High sodium intake can increase the amount of calcium released into the urine, which may contribute to calcium stone formation in susceptible people.

Reducing heavily salted processed foods can be a useful step.

Common high-sodium foods include:

• Processed meats

• Packaged soups

• Salty snacks

• Fast food

• Certain sauces

• Processed frozen meals

Cooking more meals at home can make it easier to control the amount of salt you consume.

Don’t Automatically Avoid Calcium

People sometimes assume that avoiding calcium will prevent calcium kidney stones.

That is not necessarily true.

Dietary calcium can actually play an important role in a healthy diet and may help bind oxalate in the digestive tract.

Rather than drastically restricting calcium on your own, discuss your dietary needs with a healthcare professional, particularly if you have a history of calcium stones.

Be Mindful of Excessive Animal Protein

Large amounts of certain animal-based protein foods may influence urinary chemistry and can contribute to stone risk in some people.

A balanced diet that includes a variety of plant foods and appropriate protein sources may be more beneficial than relying heavily on one type of food.

What About Oxalate-Rich Foods?

Some foods contain higher amounts of oxalate.

Examples include certain leafy greens, nuts, beets, and other plant foods.

This does not mean everyone should avoid these foods.

For people who form calcium oxalate stones, a healthcare professional may recommend adjusting oxalate intake depending on individual circumstances.

Completely eliminating nutritious foods without professional guidance can unnecessarily restrict your diet.

Can Kidney Stones Be Prevented?

Prevention depends on why the stones formed.

For many people, general strategies include maintaining adequate hydration, moderating sodium intake, eating a balanced diet, and maintaining a healthy body weight.

If you have recurrent kidney stones, your healthcare professional may recommend testing the stone itself or analyzing your urine.

This can provide information about the substances contributing to stone formation.

A personalized prevention plan can then be developed.

What Happens When You Have a Kidney Stone?

Small kidney stones may pass naturally through the urinary tract.

The process can be uncomfortable, but the stone may eventually leave the body during urination.

Larger stones may become stuck and may not pass on their own.

Depending on the situation, medical treatment can include medications, procedures that break up the stone, or other techniques to remove it.

The appropriate treatment depends on the stone’s size, location, composition, symptoms, and whether it is causing obstruction or infection.

Why Follow-Up Matters

Passing a stone does not necessarily mean the problem is over.

People who have had one kidney stone may develop another in the future.

If possible, identifying the type of stone can help determine how to reduce the risk of recurrence.

A healthcare professional may recommend blood tests, urine testing, imaging, or analysis of a passed stone.

These evaluations can reveal information that cannot be determined from symptoms alone.

Supporting Overall Urinary Health

Kidney health and urinary health are closely connected.

Simple daily habits can support normal urinary function.

Drink enough fluids for your individual needs, avoid routinely holding urine for very long periods, and pay attention to changes in urination.

A balanced diet, regular physical activity, and management of conditions such as high blood pressure and diabetes can also support long-term kidney health.

If you notice persistent changes in urination, recurring pain, blood in the urine, or repeated urinary infections, speak with a healthcare professional.

Kidney Stones vs. Urinary Tract Infections

Kidney stones and urinary tract infections can sometimes produce similar symptoms, but they are different conditions.

A urinary tract infection may cause burning during urination, frequent urination, urgency, or cloudy urine.

Kidney stones can cause severe side or back pain and may also cause blood in the urine.

The two conditions can occur together.

Fever, chills, and severe illness in someone with possible urinary obstruction are particularly concerning and require prompt medical attention.

Frequently Asked Questions

Can drinking water dissolve a kidney stone?

Drinking water does not reliably dissolve most kidney stones. However, adequate hydration can support urine flow and may help small stones pass naturally.

How much water should I drink to prevent kidney stones?

Fluid needs vary from person to person. A healthcare professional can recommend an appropriate target based on your health, history of stones, activity level, and other factors.

Can kidney stones go away on their own?

Small stones often can pass naturally, while larger stones may require medical treatment.

Is blood in urine always caused by kidney stones?

No. Blood in the urine can have many causes, including infections, stones, medications, and other urinary or kidney conditions. Unexplained blood in the urine should be evaluated.

Can children get kidney stones?

Yes. Kidney stones can occur in children, although they are less common than in adults. A child with severe pain, blood in the urine, vomiting, fever, or difficulty urinating should receive medical attention.

Final Thoughts

Kidney stones develop when certain substances in urine become concentrated enough to form crystals that gradually grow into hard deposits.

Some stones cause no symptoms, while others can produce intense pain, urinary changes, nausea, and vomiting.

Staying adequately hydrated, eating a balanced diet, moderating sodium intake, and maintaining overall health can support kidney and urinary health. For people who have experienced kidney stones, identifying the type and underlying cause can make prevention more personalized.

Most importantly, severe pain accompanied by fever, chills, persistent vomiting, difficulty urinating, or significant weakness should not be ignored.

Kidney stones can often be treated successfully, but prompt medical attention is important when symptoms suggest a blocked urinary tract or infection.

Taking care of your kidneys is not about one special drink or food. It is about consistent habits, awareness of warning signs, and appropriate medical care when something does not feel right.