Below is an instruction from Human. Write a response.
    ### Instruction:
    What to do for Kidney Stones in Adults ?
    ### Response:
    - A kidney stone is a solid piece of material that forms in a kidney when substances that are normally found in the urine become highly concentrated.  - Kidney stones are one of the most common disorders of the urinary tract.  - Certain foods may promote stone formation in people who are susceptible, but scientists do not believe that eating any specific food causes stones to form in people who are not susceptible.
    