This discovery could have some implications for humans in medical conditions such as kidney failure. They are suggesting that instead of undergoing dialysis to remove the toxic urea, they could expel the waste themselves through their mouths. They said, "hypothetically, if active urea-excretion mechanisms can be expressed in the mouth of a patient with kidney failure, urea excretion can still occur, through rinsing the mouth with water—just like the soft-shelled turtle."
This is like one of those would you rather situations. Which exactly would be worse: sitting through dialysis on a regular basis or always having your mouth taste like pee? I personally would rather have dialysis. But who knows, I might be singing a different tune someday if I ever need dialysis and I will be thanking my lucky stars that some researcher in Singapore wondered why turtles stuck their heads underwater not to drink.