Everybody adds dressings because they make a boring salad with green leaves taste so much better, Malkoff says, but you should ask for the sauces to be on a side, if you are at a restaurant, and use it “conservatively.” Just one tablespoon of Italian dressing has 243 mg of sodium; Balsamic Vinaigrette salad dressing has 280 mg. Ranch is a little better with 122 mg of salt in one tablespoon. The salad can be unhealthy for several other reaosons.