Global warming does what?

Apparently, there must be an epidemic in the southern states or should I call them the "kidney-stone belt." And in this story Tom Brikowski, an associate professor with a specialty in hydrology in the department of geosciences at the University of Texas at Dallas, claims the "belt" is moving north.

Kidney stones are mostly a by-product of dehydration and the body not being able to excrete waste, thusly, creating a buildup of minerals. According to the study by Brikowski, there are about 1.6 million kidney stone cases per year and will increase to 2.2 million by 2050. This will partially be a result of optimal conditions for kidney stones moving further north. As the earth heats up conditions will become increasingly more prevalent in the south and begin to appear further north. This implies that a person should drink more water as it gets hotter outside.