Noida: As temperatures across Delhi-NCR continue to hover above 40°C, hospitals are witnessing a sharp rise in dehydration-linked kidney ailments, prompting doctors to warn that extreme heat is becoming a serious renal health risk.Nephrology OPDs and emergency wards are reporting an increase in cases of dehydration-related acute kidney injury (AKI), kidney stones, electrolyte imbalance, urinary tract infection (UTI) and worsening chronic kidney disease (CKD), doctors said.“We have seen an increase in such cases over the past few weeks,” said the director and head of nephrology and kidney transplant medicine at Fortis Hospital, Dr Anuja Porwal. “Sharp fluctuations in temperature, prolonged outdoor exposure and inadequate fluid intake are major contributing factors.”Doctors said dehydration-induced AKI has emerged as one of the most common summer conditions. Severe fluid loss reduces blood supply to the kidneys, temporarily impairing their ability to filter waste effectively.“Extreme heat affects not just hydration levels but also causes significant stress on the kidneys, especially when dehydration is repetitive or prolonged,” said Dr Vishal Singh, director, nephrology, Max Super Speciality Hospital. “We are also seeing a seasonal spike in kidney stone cases because excessive sweating leads to concentrated urine, increasing the likelihood of crystal and stone formation.”According to doctors, patients are arriving with symptoms such as dizziness, weakness, muscle cramps, low urine output, severe fatigue, flank pain, burning urination and, in some cases, blood in the urine. Some patients have required hospitalisation after kidney function deteriorated significantly.Doctors noted that while elderly people, diabetics and patients with pre-existing kidney disease remain highly vulnerable, younger adults are increasingly reporting complications as well.“Younger adults between 20 and 40 years are increasingly presenting with kidney stones and dehydration-related kidney stress during heatwaves,” Dr Porwal said, recalling a recent case of a 26-year-old Delhi resident who developed severe flank pain and vomiting during extreme heat and was later diagnosed with a dehydration-linked ureteric kidney stone.A senior doctor at Noida district hospital said dehydration-related kidney problems are often underestimated because symptoms develop gradually. Children and outdoor workers such as construction labourers, delivery personnel, drivers and security guards are among the worst affected due to prolonged exposure to heat and inadequate water intake.Doctors warned against excessive consumption of caffeinated beverages, sugary drinks and energy supplements during summer. They advised people to stay hydrated, avoid prolonged afternoon exposure and include fluids such as coconut water, lemon water and buttermilk in their diet. Repeated episodes of dehydration over the years, they cautioned, could contribute to long-term kidney damage.
