The expression “you are what you eat” is a cliché because it is true. The worse food you put in your body, the worse you will feel. People usually associate unhealthy food with weight gain, but skin damage comes before the extra inches around the waistline. “If one night before bed you’re eating a lot of processed foods that is high in sodium and trans fat, your skin will look bad the next morning,” Deborah Malkoff-Cohen, registered dietitian and certified diabetes educator, says. Other factors also play a role but not as much as what goes into your body.