Abstract
Kidney stone disease has historically shown higher incidence in men than women, but emerging evidence suggests this gap narrows with age. Using the UK Biobank, we analyzed 494,745 stone-free participants from 2010 to 2022. During follow-up, 5,614 incident cases were identified, with men consistently at higher risk. However, the male-to-female relative risk declined significantly with advancing age, decreasing 0.86%-1.34% per year (Y = 3.49-0.02x). This trend was evident in both single-year and 5-year stratifications, while no significant temporal change was observed across calendar years. Our findings indicate a progressive convergence in stone risk between sexes, underscoring the importance of incorporating age- and sex-specific considerations into prevention and management strategies for kidney stone disease.</p>