Popcorn, french fries, tortilla chips . . . without salt, these snacks just wouldn’t be the same. Used in moderation, salt can boost the flavor of food (try sprinkling some on sliced cucumber or a ripe tomato). It’s also an important mineral your body needs to function. Too little salt (aka sodium) in your diet can cause physical problems. But too much salt can be bad for you as well. It’s fine to add a few sprinkles to fresh food, but be careful not to go overboard. Many foods already contain more than you need. Before you reach for the salt shaker, learn how this mineral affects your body.