Kidney stone cases among young adults (20-40yrs) in Delhi have increased by 30–40%, which is related to the city's extreme heat and dehydration.

Evidence has shown that global climate change, with extremes of temperature, affects vulnerable population groups differentially, with higher rates of dehydration and subsequent episodes of nephron—or urolithiasis.

Urine's chemical content can cause stones due to dehydration from higher temperatures. 

Some causes are genetic susceptibility and high oxalate consumption (found in foods like chocolates, berries, nuts, and green leafy vegetables). 

Overindulgence in foods high in protein and sodium, hyperuricosuria, and hypercalciuria, like metabolic diseases, can increase patients' risks.

Severe back or abdominal discomfort, frequent urination urges, and even blood in the urine are common complaints.

Officials stress the importance of staying hydrated, drinking lots of fluids, and making dietary changes.