Tourist at Universal Studios Japan says he passed kidney stone after 3 rollercoaster rides

A tourist at Universal Studios Japan claimed to have passed a kidney stone after riding three rollercoasters.

The validity of his claims were disputed online by netizens, but a doctor chimed in to say that it was possible for such an incident to happen.

Incident

The Chinese man, surnamed Wang, said in a Weibo post that he frequently urinated during his trip to Osaka, Japan, leading him to suspect that a kidney stone had dislodged into his ureter.

He also explained that he had a history of suffering from kidney stones and was unable to visit a doctor while in Japan.

Instead, he went ahead with his planned visit to Universal Studios, according to Chinese media Sing Tao.

After riding on three rollercoasters, including the popular Flying Dinosaur, he allegedly suddenly passed a small black stone that looked similar to a stone "mixed in rice".

Following this, Wang claimed that his symptoms subsided immediately and called it a "miraculous" event.

He added that he had a predisposition to kidney stones, having previously found multiple smaller stones during a physical examination.

As the stones were smaller than 5mm, his doctor had advised him to drink plenty of water and jump rope regularly to promote its expulsion, he claimed.

Online discussion

Wang's post piqued the interest of netizens, with some joking that they would ride a rollercoaster to expel kidney stones in the future.

"Doctors will prescribe three roller coaster rides a day in the future," one said.

A urologist weighed in on the matter, according to local media, and said that the vibrations and body position changes brought about by the rollercoaster rides may have helped to expel the stone that had entered the middle and lower ureters.

However, the doctor called Wang's incident a case of pure luck.

He added that the method carried risks such as stone impaction, where the stone may become embedded within the ureteral wall, or mucosal scratching, and that patients should adhere to proper treatment.

Top image via rideonOrlando/Instagram and Urology Austin (for illustration purposes)