A very healthy salad could go very wrong with one too many shakes of oil or dressing. The main issue with dressing is its fat and sodium content—and the fact that people have trouble controlling their portions. Two tablespoons is an appropriate serving of dressing, but most restaurants serve much more than that, whether mixed in to your salad or served on the side. Those calories add up fast. When dining out, always ask for dressing on the side and dip your fork into the dressing before picking up your bite of salad. Caesar, ranch and other cream-based dressings (when not specified as low-fat) are calorie bombs worth avoiding. Look for dressings specified as "low-fat" that contain no more than 60 calories per serving. You can also add flavor for minimal calories by using salsa, vinegar or lemon juice.
Salad may be the symbol of healthy eating, but not every salad is healthful—or diet-friendly. The healthfulness of your next salad depends on the simple choices you make when topping or dressing it. Perhaps my greatest discovery about salads was that because you can customize them so easily, you could make a huge main-course salad for a very small amount of calories. Pile in the lettuce and veggies, add a moderate amount of lean protein, sprinkling some cheese and a little something crunchy and measure a portion-controlled side of dressing, and you’ve got a dinner that won’t leave you feeling hungry.