Riding roller coasters helps patients with kidney stones, pass the stone with more ease, according to scientists who found that the activity helps patients pass stones with 70% success rate. “I had patients telling me that after riding a roller coaster, they were able to pass their kidney stone. I even had one patient saying he passed three different stones after riding multiple times,“ said David Wartinger, urologist at Michigan State University . Using a validated, synthetic 3D model of a hollow kidney with three kidney stones no larger than 4 millimetres, he took the model in a backpack and rode a roller coaster 20 times. “ Sitting in the last car of the roller coaster showed a 64% passage rate, while sitting in the first few cars only had 16% success,“ Wartinger said. Then the researchers rode the same roller coaster with multiple kidney models attached to the researchers.
They also found that both studies showed a 100% passage rate if the stones were located in the upper chamber of the kidney . Wartinger said roller coasters too fast or too violent won't work as the G-force pins the stone into the kidney and doesn't allow it to pass. â€œThe ideal coaster is rough and quick with some twists and turns, but no upside down or inverted movements,â€œ he said.
Lithotripsy , which breaks apart kidney stones that are too large to pass, is a common treatment but it can leave remnants in the kidney which can result in another kidney stone.