13. Diet sodas
Their claims of zero calories and no sugar may seem innocent enough, but diet soda is anything but innocent. They’re loaded with artificial sweeteners; studies show that your body reacts to these in much the same way it reacts to an onslaught of real sugar. Specifically, drinking them can actually increase your risk for developing type 2 diabetes. What’s more, diet sodas are horrible for your teeth, they contain zero nutritional value, and consuming a lot of them has been linked to depression in some people. Need something to drink? Try water! Don’t like water? Unsweetened or very lightly sweetened iced tea should do nicely.