Extreme temperatures in Ganzhou, China, can increase the risk of urolithiasis (kidney stones). The study looked at hospital data from 2018 to 2019 and found that both very hot and very cold temperatures were linked to more hospitalizations for urolithiasis. The effects of warm temperatures lasted longer than cold temperatures, with men and people aged 21-40 being more vulnerable. It's important to be aware of these risks and take steps to prevent kidney stones, especially in extreme temperature conditions.