Author: Aaron Lessen, M.D.  Educational Pearls: Anecdotal evidence suggests that roller coasters may help with kidney stones. A recent study used a model of a kidney and ureter with different sized stones and put it on Thunder Mountain roller coaster in Disney World. There was “dramatic passage” of the kidney stones at the rear of the roller coaster. References: Marc A. Mitchell, DO; David D. Wartinger, DO, JD. Validation of a Functional Pyelocalyceal Renal Model for the Evaluation of Renal Calculi Passage While Riding a Roller Coaster. The Journal of the American Osteopathic Association, October 2016, Vol. 116, 647-652. doi:10.7556/jaoa.2016.128. http://jaoa.org/article.aspx?articleid=2557373