On a hot summer day, a cold refreshing soda might sound like a nice way to beat the heat. But there is mounting evidence that sugary sodas may raise your risk of type 2 diabetes, regardless of your body weight. A recent study in the journal Diabetologia found that the more soda or sweetened milk products you drink, the higher your risk of developing type 2 diabetes. Fortunately, it found that drinking one fewer soda per day cut the diabetes risk by up to 25 percent.There was no direct cause-and-effect found by researchers, but one theory is that sodas cause a spike in blood glucose levels and the production of insulin, the hormone that helps your body use sugar for energy. Over time, frequent spikes make the body more resistant to insulin, and therefore more likely to develop diabetes.