Condiments and Vegetable Toppings
Stick with light mayonnaise, which only has 36 calories and 3 grams of fat in 1 tablespoon. By comparison, regular mayonnaise has nearly three times more calories and fat. Replace the mayo with Greek yogurt for extra protein and calcium. If you love cheese on your tuna sandwich choose low-fat brands, but you'll hardly miss the cheese if you add some flavor with a touch of fat-free ranch dressing and top the sandwich with vegetables. Any combination of green leaf lettuce, spinach, tomatoes and thinly sliced or grated carrots contribute fiber, antioxidant phytochemicals, potassium and vitamins A and C. Use mung bean sprouts to boost your vitamin K.