Children and adults treated with oral antibiotics may have a higher risk of developing kidney stones according to a new study. The findings published in Journal of the American Society of Nephrology suggested that the strongest risks appeared at younger ages and among patients most recently exposed to antibiotics. Read: 8 facts about kidney stones you need to know The overall prevalence of kidney stones has risen by 70 per cent over the past 30 years with particularly sharp increases among adolescents and young women said lead author Gregory E. Tasian from the Children's Hospital of Philadelphia (CHOP). According to