Is Subway Healthy? The Healthiest Options to Choose

Is Subway healthy? It all rides on your order. Opting for a smaller sandwich with extra veggie toppings can keep your meal on the lighter side. Before you swing by Subway, check out our dietitian's ideas and tips for healthier choices.

Is Subway healthy?

The short answer: it depends on what you pick! Subway promotes its customization and its long-running "Eat Fresh" branding as a “healthier” fast-food option. To an extent, that is true. You can customize your sandwich to suit your health goals.

But there is a catch at Subway: its high sodium. Processed deli meats are usually loaded with salt. For instance, a 6-inch lean turkey breast sub packs around 780-800 milligrams of sodium, and that's before you even think about the cheese, pickles, or condiments. All in total, one sandwich could hit the recommended daily sodium limit of 2,300 mg by noon! The American Heart Association suggests an even lower ideal target of around 1,500 mg for most adults, especially those watching their blood pressure or dealing with heart concerns.

Healthiest Subway options

Proteins

Even though deli meats are typically high in sodium, some proteins at Subway are better than others. These are the leanest protein picks:

• Oven-Roasted Turkey Breast — Around 260 calories for a 6-inch with standard veggies. It packs about 19g of protein with only 3g of fat. One of the leanest choices on the menu, it rivals a breakfast build made with egg whites.
• Rotisserie-Style Chicken — Flavorful with modest fat content, it's a solid, higher-protein choice, with roughly 22g of protein per serving.
• Grilled Chicken — Also a great lean pick, and it's lower in sodium than the rotisserie chicken or turkey breast.

Proteins to be cautious with:

• Tuna — This one surprises people! Tuna sounds healthy, but Subway's version is premixed with mayo, which adds excess calories and fat. Alone, tuna is super-nutritious, but the prep will make you want to think about healthier proteins.
• Spicy Italian/Meatball Marinara — Deliciously tempting, these top the calories and sodium lists, while packing quite a bit of fat. If you're aiming for a leaner cured-meat, try swapping for Black Forest Ham.

Best breads

Don't underestimate the bread! Most bread possibilities at Subway are low in fiber, since they are not whole grains. Still, some breads make a healthier sandwich than others, and portion size matters significantly.

• Hearty Multigrain — This bread may be your best bet with 3 grams per serving–the highest at Subway.
• Mini Hearty Multigrain Bread — A smaller version of the hearty multigrain, delivering just 130 calories per serving plus 2 grams of fiber.

Look into this low-carb idea: The No Bready Bowl is essentially the tasty sandwich fillings, sans the bread, served in a bowl. This cuts 24-50 grams of carbs, perfect for anyone watching their carb intake.

Load up on vegetables

This is where Subway really shines! Unlike most fast-food restaurants, Subway lets you pile on as many vegetables as you want at no extra cost. So, go for it!

• Low-calorie spinach, lettuce, tomatoes, cucumbers, green peppers, onions, and banana peppers boost flavor, texture, and add fiber, vitamins, and antioxidants.
• The more vegetables you pile on, the more satisfying your sandwich will be, without piling on calories.

Best bets for sauces

• Yellow mustard — About 3 calories per teaspoon. It's low in fat and pairs beautifully with almost anything. Still, yellow mustard is a sneaky source of sodium, with 170 mg per serving.
• Red wine vinegar — 0 calories. A tangy, flavorful addition.

Be cautious on sauces: Where health goals get derailed

This is the single biggest place where a healthy Subway sandwich goes sideways. Here's the breakdown:

• Regular mayonnaise — 100–110 calories per serving and 11–12g of fat. It wins for highest-calorie sauce on the menu. If you love mayo, go for "light" or ask for a light drizzle.
• Ranch / Peppercorn ranch — Tied with mayo at around 110 calories and 11g of fat per serving, it's very easy to overdo.
• Chipotle Southwest sauce — Also hovering around 100 calories. Flavorful, but adds up fast.
• Creamy sriracha — Although it may seem like a neutral choice, it clocks 40 calories and 240 mg of sodium.
• Buffalo sauce — Better than most, calorically, at around 10 calories, but keep in mind it is still high in sodium (around 390 mg).
• Sweet onion sauce — Fat-free and flavorful, though it does contain about 8g of sugar per serving.

Tips for crafting the healthiest sandwich at Subway

1. Stick to a 6-inch. A footlong doubles everything — calories, sodium, carbs. If you're genuinely hungry, add a side salad, apple slices, or extra veggies rather than super-sizing your sandwich.
2. Choose multigrain bread. An easy way to ramp up fiber and help keep you feeling satisfied.
3. Pile on the veggies. Spinach, tomatoes, cucumbers, peppers — no extra cost, big nutritional payoff.
4. Watch your sauce. One squirt of mustard or a splash of vinegar will do wonders for your goals over ranch or mayo.
5. Mind the sodium. If you're keeping an eye on your sodium, go for grilled chicken, veggie options, or minimally processed meats to keep sodium more manageable.
6. Use the nutrition calculator. Subway's online tool lets you build your sandwich and check the full nutrition information in about 60 seconds. Super handy for taking out the guesswork!

The app is where it's at! MyNetDiary's extensive food database already includes Subway's full menu along with detailed nutritional info, so you can log and compare options long before you order. Use the app to set a sodium or calorie target, track macros, or manage a specific health condition like hypertension or diabetes. MyNetDiary can show you exactly how a given Subway meal fits into your day's totals.

Frequently Asked Questions

Is Subway good for weight loss?

It can be, but Subway is not a magic weight-loss solution. It has a wide range from lean, controlled sandwiches, bowls, and salads to calorie-dense and sodium-heavy versions of the same. The real magic lies in the careful customization.

Is Subway healthier than other fast food chains?

Subway gives you more control over your meal than most fast-food spots, and the chain boasts such lighter fare as its Fresh Fit sandwiches. You can still customize those, too! So, a well-ordered Subway meal can potentially be more nutritious than anything on other fast-food menus. Subway isn't always better; it's just easier to make a better choice if you know what to look for.

What should I avoid ordering at Subway?

Keep an eye on the big 3: protein, sauce, and size. When checking out protein, consider skipping the Tuna Salad and Meatball Marinara, which are the highest in fat and calories, so consider them an occasional treat. On to sauces: regular mayonnaise and ranch each add 100–110 calories and 11 grams of fat per serving — that's not counting the sandwich itself! In size, the footlong doubles everything on the Nutrition Facts label, including sodium, which pushes a single meal far past the daily recommended limit when cheese and condiments get on board. Sidestep these 3 pitfalls, and you'll keep your Subway order from falling off the healthy fast-food chain train.

Note: MyNetDiary does not endorse nor get paid to promote products mentioned in this post.

Reviewed by Joanna Kriehn, MS, RDN, CDCES

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