New Delhi: As temperatures soar across India, doctors are reporting a sharp rise in cases of Kidney Stones, with dehydration emerging as a major trigger behind the trend.

Health experts say that while diet and genetics do play a role, the most common and preventable cause during summer is inadequate water intake. With heatwaves becoming more intense due to climate change, the risk is only expected to grow.

Dehydration a key cause

According to Dr Sanjeev Gulati, excessive sweating during hot weather leads to significant fluid loss. When the body becomes dehydrated, urine turns more concentrated, creating the perfect conditions for minerals like calcium and oxalate to form crystals.

Over time, these crystals combine and harden into kidney stones, causing severe pain and potential complications.

Doctors note that emergency visits to kidney stones can increase by up to 30 per cent when temperatures exceed 27°C, highlighting the direct link between heat and the condition.

Stones can form quickly

One of the most concerning aspects, experts say, is how rapidly stones can develop. Even a few days of dehydration during extreme heat can trigger their formation.

Reduced urine output allows minerals to settle and crystallise, sometimes within just three days of sustained exposure to high temperatures.

Regions in North India, often referred to as the “kidney stone belt,” are particularly vulnerable due to prolonged heat exposure and higher average temperatures.

How dehydration affects the body

The body relies on adequate fluid intake to flush out waste products. When hydration levels drop, urine becomes darker and more concentrated, allowing minerals to accumulate instead of being eliminated.

This leads to the formation of crystals that gradually grow into stones. Symptoms typically include sudden, intense pain in the back or side, nausea, and difficulty urinating.

If left untreated, kidney stones can block urine flow, cause infections, and in severe cases, lead to chronic kidney disease.

Seven key ways to prevent kidney stones

Doctors emphasise that prevention is largely based on simple daily habits:

1. Stay well hydrated

Drink at least 2.5–3 litres of water daily. Increase intake if you are outdoors or sweating heavily. Pale yellow urine is a sign of good hydration.

2. Include citrus in your diet

Lemon and lime contain citric acid, which helps prevent crystals from sticking together.

3. Watch your salt and protein intake

Limit excessive salt, red meat, and high-oxalate foods such as spinach, nuts, and chocolate.

4. Avoid sugary and fizzy drinks

Packaged juices and sodas can increase stone risk and should be consumed in moderation.

5. Reduce fast food consumption

Highly processed foods often contain high salt levels, contributing to stone formation.

6. Maintain a healthy lifestyle

Regular exercise and weight control help reduce the risk.

7. Seek timely medical advice

Small stones may pass with medication, but larger ones might require surgical intervention.

Do not ignore warning signs

Doctors caution that kidney stones are not just a temporary discomfort. Ignoring symptoms can lead to serious complications, including urinary tract blockage and infections.

There is also a high recurrence rate—up to 50 per cent in many cases—making long-term prevention crucial.

People experiencing symptoms such as sharp abdominal or back pain, blood in urine, or nausea should seek medical attention promptly. Early diagnosis can prevent complications and reduce the need for invasive treatments.

Conclusion

With rising temperatures becoming the norm, the risk of kidney stones is no longer seasonal but an ongoing public health concern. Staying hydrated, maintaining a balanced diet, and recognising early symptoms are essential steps in protecting kidney health.

As experts warn, simple lifestyle changes today can prevent painful and potentially serious complications in the future.