1. Doctor finds anecdotal evidence that people are passing kidney stones after riding on Big Thunder Mountain Railroad at Disney World

2. Doctor makes 3-D model of kidney, complete with stones and urine (his own), takes it on Big Thunder Mountain Railroad 60 times

3. “The stones passed 63.89 percent of the time while the kidneys were in the back of the car. When they were in the front, the passage rate was only 16.67 percent. That’s based on only 60 rides on a single coaster, and Wartinger guards his excitement in the journal article: ‘Preliminary study findings support the anecdotal evidence that a ride on a moderate-intensity roller coaster could benefit some patients with small kidney stones.’”

4. “Some rides are going to be more advantageous for some patients than other rides. So I wouldn’t say that the only ride that helps you pass stones is Big Thunder Mountain. That’s grossly inaccurate.”

5. “His advice for now: If you know you have a stone that’s smaller than five millimeters, riding a series of roller coasters could help you pass that stone before it gets to an obstructive size and either causes debilitating colic or requires a $10,000 procedure to try and break it up. And even once a stone is broken up using shock waves, tiny fragments and “dust” remain that need to be passed. The coaster could help with that, too.”

SCIENCE: IT WORKS