Gut health is all the rage. It's probably why you landed on this page. But if you're like us, you probably need a little refresher on why this emerging science is so important. So here goes: More than 100 trillion bacteria are floating around your gut—a flora, if you will, of microbes both good and bad for your health. Inspired by that research, we rounded up the handy list below of five foods to stay away from in order to live your best gut health life—but not entirely, since some of our faves (RIP, booze) didn't make the gut cut. It's all about balance, amirite?