Epidemiology of nephrolithiasis
Nephrolithiasis is common, costly, and painful. The prevalence of nephrolithiasis, defined as a history of stone disease, varies by age, sex, race, and geography while the incidence of nephrolithiasis, defined as the first stone event, varies by age, sex, and race. Epidemiologic studies have quantified the burden of kidney stone disease and expand our understanding of risk factors. A variety of dietary, non-dietary, and urinary risk factors contribute to the risk of stone formation and the importance of these varies by age, sex, and body mass index.Low fluid intake, high urinary oxalate or calcium or uric acid, and low urinary citrate are all associated with nephrolithiasis. These results from epidemiologic studies can be considered in the clinical setting when devising treatment plans to reduce stone recurrence.