Salts are electrolytes. (Electrolytes are salts?) You need them in your body so that your nervous system can conduct signals and keep things going - like your heart.
We live. We grow. We hurt. We heal. We get sick. We recover. We age. We wear out. We die.
Rather that avoiding "omg sugar" or "omg salt" or "omg fat," we should just be eating well-rounded diets. Have some beef today. And some pork tomorrow. And some fish after that. Have some fruit. And veggies. And a bit of dessert. And a spoonful of honey. And some powdered sugar on that syrup'd French toast. Just don't eat large piles of stuff for a meal. And don't eat the same thing every day.
Life's gonna kill you. Just don't clog up your body with excessive amounts of the same thing and you probably won't die early.