Many people have been persuaded to ditch their conventional, sugar-laden sodas for diet versions, due to the mainstream belief that diet products are healthier. After all, they don't contain real sugar, so they must be better for you, right? Not so much. Research continues to find evidence that these artificially sweetened drinks are no better than their sugar-containing counterparts. In fact, some people believe that they may actually be worse. A new study led by Swedish researchers, recently found that even drinking just two cans of diet soda each day can actually double your risk of developing diabetes.