Watch Out! These Everyday Habits May Be Sneakily Damaging Your Kidneys

7. Steer Clear of Soda

Let's face it—soda doesn't bring anything good to the table. It's essentially just sugar in liquid form. In fact, a typical 12-ounce soda has the same amount of sugar as three and a half donuts. Yikes! Researchers have found that drinking two or more sodas a day doubles your risk of kidney disease.

And it's not just the sugar to blame. A 2007 study found that cola's phosphoric acid can mess with your genes, damaging your kidneys over time. To keep your kidneys safe, try limiting your soda intake to just one per day—or even better, once a week. Your kidneys (and waistline) will thank you.