Just add it to the list of things caused by global warming.
Check it out:
The hotter it gets, the more people seek treatment for kidney stones, according to a new study that also predicts climate change may make this painful condition even more prevalent in the future.
The study, published Thursday in the journal Environmental Health Perspectives, found a relationship between the number of hot days in a year and the risk of kidney stones in patients of several U.S. cities. As daily temperatures rose above 50 degrees Fahrenheit (10 degrees Celsius), the risk of kidney stones increased in some residents of Atlanta, Chicago, Dallas and Philadelphia, but not in Los Angeles, which was also included in the study.