来源：The Daily Meal
By Molly Aronica, Mar 26, 2012
Plenty of fast-food brands are jumping on the healthy bandwagon these days. Sandwich chains like
Subway and
Così are particularly keen on offering low-calorie, health-conscious menu items, and several others have followed suit.
While it’s certainly a good sign that such influential fast-food companies are taking the initiative to help Americans maintain a more balanced diet, it’s time to take a closer look at just how healthy the options are at national sandwich chains.

Arby's
This roast beef sandwich giant has three menu items that fit the bill when it comes to the "ideal" healthy sandwich.
Jr. Roast Beef Sandwich: Thin-sliced roast beef on a toasted sesame seed bun. 210 calories, 60 calories from fat, 6 grams total fat, 2 grams saturated fat, 520 milligrams sodium.
Jr. Chicken Sandwich: Crispy white-meat chicken with shredded lettuce and mayo on a sesame seed bun. 320 calories, 130 calories from fat, 15 grams total fat, 2.5 grams saturated fat, 680 milligrams sodium.
Jr. Deluxe Sandwich: The same ingredients as the Jr. Roast Beef, with the addition of shredded lettuce, tomato, and mayo. 260 calories, 110 calories from fat, 12 grams total fat, 3 grams saturated fat, 560 milligrams sodium.
Credit: Wikimedia Commons/Jcerulli
Read more: http://www.thedailymeal.com/americas-healthiest-fast-food-sandwiches-0#ixzz2Hp0623ni

Così
With their signature flatbread and use of premium ingredients, it’s no surprise that
this chain has three sandwiches that fit the bill.
Fire-roasted veggie sandwich on rustic bread: Red and yellow peppers, eggplant, artichoke hearts, zucchini, squash, and red onions with shredded romaine and feta cheese spread on rustic flatbread. 350 calories, 99 calories from fat, 11 grams total fat, 5 grams saturated fat, 291 milligrams sodium.
Hummus and veggie sandwich on rustic bread: Creamy hummus with tomatoes, cucumbers, red onions, and basil on rustic flatbread. 397 calories, 59 calories from fat, 7 grams total fat, 0 grams saturated fat, 532 milligrams sodium.
Turkey light sandwich on rustic bread: Roasted turkey, shredded romaine, and spicy honey mustard on rustic flatbread. 391 calories, 48 calories from fat, 5 grams total fat, 1 gram saturated fat, 526 milligrams sodium.

Panera Bread
This sandwich café and bakery offers a wide variety of freshly made food options, including three ultra-healthy half sandwiches.
Half tomato and mozzarella and tomato on ciabatta panini: Fresh mozzarella, roasted and fresh tomatoes, basil, and sundried tomato pesto on ciabatta. 380 calories, 15 grams total fat, 5 grams saturated fat, 695 milligrams sodium.
Half Napa almond chicken salad sandwich on sesame semolina: Chicken, diced celery, seedless grapes, almonds, lettuce, tomato, and special dressing on sesame semolina. 345 calories, 13 grams total fat, 2.25 grams saturated fat, 600 milligrams sodium.
Half tuna on honey wheat: tuna salad, lettuce, tomatoes, and red onions on honey wheat. 255 calories, 8 grams total fat, 2 grams saturated fat, 575 milligrams sodium.

Au Bon Pain
This fast-food chain is known more for their breakfast options than lunch ones; however, there are two half sandwiches on the menu that will keep your waistline trim.
Half roast beef and brie sandwich on a farmhouse roll: Roast beef, brie, tomatoes, and romaine on a farmhouse roll. 330 calories, 120 calories from fat, 13 grams total fat, 6 grams saturated fat, 680 milligrams sodium.
Half tuna and cheddar sandwich on a farmhouse roll: Tuna salad with carrots, dill, and parsley, tomatoes, romaine, and cheddar cheese on a farmhouse roll. 370 calories, 150 calories from fat, 17 grams total fat, 5 grams saturated fat, 680 milligrams sodium.
Credit: Flickr/Jareed

Subway
Surprisingly,
the chain that’s considered to be at the forefront of healthy fast-food dining only has two sandwiches that fit the bill here.
6" oven-roasted chicken sub: 320 calories, 40 calories from fat, 5 grams total fat, 1.5 grams saturated fat, 640 milligrams sodium.
6" veggie delite sub: 230 calories, 20 calories from fat, 2.5 grams total fat, 0.5 grams saturated fat, 310 milligrams sodium.
Both sandwiches are calculated including 9-grain wheat bread, lettuce, tomatoes, onions, green peppers, and cucumbers.
Credit: Subway

Quiznos
This national sandwich chain has one menu item that fits the bill.
Cantina Chicken Flatbread Sammie: Chicken, tomatoes, sautéed mushrooms, sautéed onions, and honey bourbon mustard on flatbread. 270 calories, 70 calories from fat, 7 grams total fat, 1.5 grams saturated fat, 640 milligrams sodium.
Credit: Wikimedia Commons/Piotrus

Potbelly Sandwich Shop
This Chicago-based toasted sandwich maven has one ultra-healthy sandwich on the menu.
Skinny mushroom melt: Mushrooms, Swiss, cheddar, and provolone cheeses on "thin-cut" bread. 348 calories, 127 calories from fat, 14 grams total fat, 8 grams saturated fat, 638 milligrams sodium.
Credit: Flickr/rebuildingsince92

Togo's
This sandwich shop, often attached to Dunkin’ Donuts, has a sandwich option for health-conscious diners.
Half albacore tuna sandwich: Albacore tuna salad with relish and light mayo. 330 calories, 8 grams total fat, 1.5 grams saturated fat, 610 milligrams sodium.
Credit: Flickr/jimg944