Yes—canned tuna can be a nutritious, affordable protein, especially when you choose the right type and keep an eye on sodium and mercury.
The short answer is that it can fit a healthy diet very well, but not all cans are equal. The best picks are usually tuna packed in water, lower in sodium, and eaten in amounts that match current fish-mercury guidance.
Best overall for protein on a budget: light tuna
Light tuna is the easiest all-around pick if you want a lot of protein with relatively modest calories. It’s popular for meals like tuna salad, wraps, and rice bowls because it’s convenient and versatile.
It made this list because it’s usually lower in mercury than white albacore tuna, which makes it a smarter regular choice for most adults. If you want a dependable, everyday canned tuna, light tuna is the simplest answer.
Best for keeping calories and fat lower: tuna packed in water
Tuna packed in water usually wins if your goal is lean protein. Draining it can keep the meal lighter while still giving you a filling protein base.
This is a strong choice for people tracking calories, macros, or meal prep. Fitnit can help here if you’re pairing tuna meals with training, since it can track reps and form while you focus on recovery and protein intake.
Best if you want more omega-3s: canned tuna, but choose carefully
Tuna provides some omega-3 fats, which are associated with heart-health benefits, but the amount varies by species and product. It’s not as rich in omega-3s as salmon or sardines, so it’s helpful but not the top source.
This made the guide because canned tuna still delivers meaningful nutrition for a shelf-stable food. If you like tuna, it can be part of a heart-conscious diet—just don’t rely on it as your only omega-3 source.
Best to limit: albacore and high-sodium tuna
Albacore (“white”) tuna tends to have more mercury than light tuna, so it’s the version most people should eat less often. That matters most for pregnant people, young children, and anyone who eats tuna frequently.
High-sodium tuna is also worth limiting if you’re watching blood pressure or overall sodium intake. For a healthier can, look for “low sodium” or “no salt added” when possible.
Tips
- Choose light tuna more often than albacore if you eat tuna regularly.
- Look for water-packed, low-sodium, or no-salt-added cans when possible.
- Drain tuna before eating to reduce extra sodium and calories from added liquid.
- Mix tuna with fiber-rich foods like beans, vegetables, or whole-grain bread for a more balanced meal.
- If you eat a lot of canned fish, follow current seafood advice so mercury stays in a safe range.
Sources
- Advice About Eating Fish — U.S. Food and Drug Administration
- FoodData Central — U.S. Department of Agriculture
- Fish: Friend or Foe? — Harvard Health Publishing
- Mercury poisoning — Mayo Clinic
- PubMed — National Library of Medicine
Frequently Asked Questions
Is canned tuna good for you every day?
It can be healthy, but not every day for everyone. The main reason to limit daily tuna is mercury, especially with albacore.
Is canned tuna in water healthier than oil?
Usually yes if you want fewer calories and less added fat. Tuna in water is the leaner option.
Which canned tuna is healthiest?
For most people, light tuna packed in water with lower sodium is the best all-around choice.
Is canned tuna good for weight loss?
It can be, because it’s high in protein and filling. The healthiest version is usually water-packed and not loaded with mayo or sodium.
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