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Ask anyone who has experienced a urinary blockage due to kidney stones and they will tell you there is nothing fun or remotely pleasant about the experience. Caused when salt and mineral residues form small stones inside the kidneys that move and become stuck in the ureter (the passageway via which urine passes from the kidneys to the bladder), a kidney stone blockage often results in severe pain, bleeding, nausea, and vomiting. Sometimes, especially when the stones are small, they eventually pass through the ureter and are excreted without medical intervention. Larger stones usually require treatment, which may involve one or more of the following: medication to relax the walls of the ureter; extracorporeal shock wave lithotripsy (ESWL) to break up the stones into smaller pieces so they can pass in the urine; ureteroscopy, a minimally invasive surgery in which a small tube is inserted into the urinary tract to break up the stones and remove them; or a surgical procedure to excise the stones if they are very large. Or, according to urologist and professor emeritus in the Department of Osteopathic Surgical Specialties at Michigan State University Dr. David Wartinger, DO, you could consider the lower-cost alternative of taking a ride on the Big Thunder Mountain roller coaster at Walt Disney World in Orlando, Florida and letting the force of gravity do the work. Wartinger made a media splash in September 2016 by publishing a study in the peer-reviewed Journal of the American Osteopathic Association stating that experiments he performed using a lifelike silicone model of the human urinary tract confirmed that roller coaster facilitation of calyceal renal calculi passage (i.e., taking a roller coaster ride to facilitate the passage of kidney stones) may be a feasible alternative to standard medical treatment in some cases. Predictably, the news also made the social media rounds in the simplified form of an image macro: Wartinger explained how the research came to pass in an interview with the Michigan State University publication MSU Today: The anecdotal reports Wartinger said he heard from patients resembled ones noted by a Taiwanese urologist in a February 2009 article in Taiwan Today News: One of the more interesting findings Wartinger reported was that out of the three Disney World roller coasters he and his co-researcher tried, only one of the rides achieved the desired result: In interviews, Wartinger went further than simply reporting the results of his study, to the point of actually proposing a roller coaster ride as an alternative non-medical remedy for kidney stones: We hasten to point out that Dr. Wartinger did not recommend foregoing diagnosis or treatment by a medical professional in favor of taking a roller coaster ride. Note, too, that the research was conducted not using actual human subjects, but rather a urinary tract simulator made of silicone (though the kidney stones used were real). Despite the doctor's enthusiasm, therefore, in the absence of any follow-up research confirming his results, the study cannot be considered conclusive; it does not suffice to prove that a roller coaster ride is an effective means of dislodging kidney stones. All we have, to date, is preliminary evidence suggesting that a ride on Disney World's Big Thunder Mountain roller coaster may help some patients spontaneously pass kidney stones (and only very small stones at that, according to a urologist familiar with the study consulted by the New York Times in 2016). Wartinger indicated as much himself in comments quoted in Slate shortly after the study was published. This is the validation model for getting the attention to do the human trial, he said. No human trials have yet taken place. We reached out to Wartinger for further comment but had not heard back by publication time.
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