WILMINGTON -- Nearly 2.7 million Americans go to the doctors each year for kidney stones.
They form when minerals, acids, and fluids in the urine are out of balance.
These minerals and acids are normally diluted in the urine, but crystallize and form a stone if you don't drink enough fluids.
Passing a kidney stone can be very painful.
The pain develops in your side or back, right below your ribs, and radiates to your lower abdomen.
Drinking plenty of water is the most important step to preventing the stones.
Lemonade triggers changes in the urine which decrease the likelihood of stone formation. It is best to make your own lemonade or to use a frozen concentrate.
Contrary to popular belief, restricting your intake of calcium doesn't lower the risk of developing kidney stones in most people.
Reported by Kristy Ondo