Got kidney stones? Wartinger discovered that some roller coasters help patients pass kidney stones. KOHUTH)He created a silicone mold of a kidney, and filled it with "real human kidney stones" — and urine. To simulate a patient with real kidney stones, Wartinger held the backpack, which held the kidney replica, while riding Big Thunder Mountain Railroad. And for the squeamish patients, he says the less intense coasters could be just as effective at dislodging kidney stones.

Source: CBC News September 27, 2016 21:01 UTC