Don't pass up the black (technically dark-purple color) fruit that is in this salad! Yes, an olive is considered a fruit. Olives are an excellent source of iron, vitamin A, fiber and calcium. You can enjoy olives as a snack, or add them to a salad like this one. Kalamata olives give a Greek taste to the salad and provide just enough tangy-fruity flavor. I like this salad because you can add it to any form of protein, and it has the many nutritional benefits from it’s fresh ingredients. The serving of spinach will boost your brain function and memory. Spinach also provides a good source of zinc (boosts immune system), protein (supports bone and muscle function), and fiber (controls blood sugar levels). Topping off the list of health benefits for this salad, red onion is good for you because it contains fiber and folic acid which help create new cells.