Summer heat can cause kidney stones in just 3 days, Here’s how to prevent it

As temperatures rise across India, doctors are seeing a worrying trend: more people are landing in hospitals with kidney stones.

While many blame diet or genetics, one of the biggest triggers is something most people ignore: dehydration.

According to Dr Sanjeev Gulati, Chairman - Nephrology at Fortis Escorts, high temperatures increase the risk of kidney stones mainly because of excessive sweating. When the body loses water, urine becomes more concentrated.

This creates the perfect environment for minerals like calcium and oxalate to stick together and form crystals, which eventually turn into stones.

Experts say that kidney stone cases can rise sharply during the summer months. In fact, emergency visits related to kidney stones may increase by up to 30% when temperatures cross 27°C.

With global warming leading to longer and more intense heatwaves, this problem is expected to grow even further.

What makes it more concerning is how quickly stones can form. Doctors warn that even a few days of dehydration in extreme heat can trigger stone formation.

Sweat loss reduces urine volume, allowing minerals to settle and sometimes harden within just three days of exposure to high temperatures.

Regions in North India, often referred to as the “kidney stone belt,” are particularly vulnerable due to prolonged heat exposure. If left untreated, kidney stones can lead to serious complications, including infections, blockage of urine flow, and even chronic kidney disease.

The human body needs a steady balance of fluids to flush out waste. When you don’t drink enough water, especially in hot weather, urine becomes darker and more concentrated. This allows minerals to accumulate instead of being flushed out.

Over time, these minerals form crystals, which can grow into painful stones. The pain often starts suddenly and can be severe, affecting the back, side, or lower abdomen.

7 GOLDEN RULES TO PREVENT KIDNEY STONES

Doctors say prevention is simple and largely depends on daily habits. Here are seven key rules to follow:

1. Drink enough water

Aim for 2.5–3 litres of water daily (around 10–12 glasses). If you are outdoors or sweating more, increase your intake. A simple way to check hydration is by looking at your



urine—it should be pale yellow. Dark urine is a sign that you need more fluids.

2. Add lemon or lime to your water

Citrus fruits contain citric acid, which helps prevent stone formation by stopping crystals from sticking together.

3. Watch your diet

Limit salt, animal protein, and high-oxalate foods such as spinach, nuts, and chocolate. Experts say rock salt can be a better alternative in moderate amounts.

4. Cut down on sugary and salty drinks

Packaged juices, sodas, and energy drinks can increase the risk of stones. Also, avoid activities that cause excessive sweating without proper hydration, such as hot yoga.

5. Reduce fast food intake

Fast foods are often high in salt and unhealthy fats, which can contribute to stone formation.

6. Maintain a healthy weight

Obesity is linked to a higher risk of kidney stones, so regular exercise and a balanced diet are important.

7. Seek treatment when needed

Small stones (less than 10 mm) can often be treated with medication. Larger stones may require surgical procedures.

WHY YOU SHOULD NOT IGNORE KIDNEY STONES

Kidney stones are not just about pain. If ignored, they can block the urinary tract and cause infections. In severe cases, this can damage the kidneys permanently and lead to chronic kidney disease.

Doctors also warn that once you have had kidney stones, the risk of recurrence is high, up to 50% in many cases. This makes long-term prevention and regular check-ups extremely important.

WHEN TO SEE A DOCTOR

If you experience symptoms like sharp pain in the back or side, blood in urine, nausea, or difficulty urinating, do not ignore them. Early diagnosis can prevent complications and reduce the need for surgery.

For people who have had kidney stones before, consulting a nephrologist for a detailed evaluation can help identify the cause and prevent future episodes.

Summer heat is not just uncomfortable; it can quietly harm your kidneys if you are not careful. Staying hydrated, eating wisely, and paying attention to early warning signs can go a long way in preventing kidney stones.

With rising temperatures becoming the new normal, these small lifestyle changes are not just helpful; they are essential.