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How Many Calories Are in Tuna Flakes? A Nutritional Breakdown

4 min read

Did you know that a 5-ounce can of light tuna flakes packed in water contains approximately 120 calories, while the same size packed in oil can have over double that amount? Understanding how many calories are in tuna flakes depends heavily on the packing liquid and the specific tuna species used.

Quick Summary

A nutritional guide explaining the varying calorie content of tuna flakes, distinguishing between varieties packed in water versus oil. It provides a detailed comparison of fat and protein content and discusses the health implications for dieters.

Key Points

  • Packing Liquid Determines Calories: Tuna flakes packed in water have significantly fewer calories than those packed in oil due to the difference in fat content.

  • Water-Packed is Leaner: A 100g serving of tuna flakes in water typically contains around 90-110 kcal, while an oil-packed version contains 150-180 kcal, emphasizing the need to check the label.

  • Species Affects Nutrition: Light tuna (skipjack) is generally lower in calories and mercury than albacore (white tuna).

  • High in Protein, Low in Fat: For those on weight management diets, water-packed tuna is an excellent source of high-quality protein and is low in overall fat.

  • Drainage Matters: Draining the packing liquid thoroughly is a simple way to reduce the calorie count, especially for oil-packed tuna.

In This Article

Canned tuna flakes are a staple in many pantries due to their convenience, high protein content, and relatively low cost. However, the exact calorie count can vary significantly depending on how the tuna is prepared and preserved. The biggest determining factor is whether the tuna is packed in water or oil, which has a major impact on its fat and calorie profiles. For those monitoring their caloric intake, selecting the right type of tuna flakes is crucial.

Tuna Flakes Packed in Water vs. Oil

When tuna flakes are packed in water (often referred to as 'in brine'), the nutritional profile reflects more of the fish's natural lean protein. The canning process uses water or brine as the preserving liquid, which doesn't add significant fat or calories. In contrast, tuna flakes packed in oil, such as sunflower or soybean oil, absorb some of that fat, dramatically increasing the overall calorie count.

  • Tuna in Water: This is the leaner, lower-calorie option. Most of its calories come from its high protein content, making it an excellent food for weight loss, muscle building, and general healthy eating.
  • Tuna in Oil: This version is higher in calories and fat due to the added oil. While it might have a richer flavor and provide more of the essential fatty acids from the oil, it is less suitable for those on a strict low-calorie diet unless the oil is thoroughly drained.

The Role of Tuna Species

The species of tuna also plays a role, though typically less pronounced than the packing medium. The two most common types found in flakes are light tuna and albacore:

  • Light Tuna: Typically made from skipjack or yellowfin, this variety is generally lower in mercury and slightly less fatty than albacore.
  • Albacore Tuna: Often labeled 'white tuna', albacore is a larger species with a higher fat content and, consequently, more calories than light tuna. It also has a higher mercury concentration, so intake should be moderated.

Comparison Table: Water vs. Oil Packed Tuna Flakes (per 100g)

Nutrient Tuna Flakes in Water (approx.) Tuna Flakes in Oil (approx.)
Calories 90–110 kcal 150–180 kcal
Total Fat 0.8–1.5g 5.0–12.5g
Protein 20–24g 12–15g
Carbohydrates ~0g ~0g
Omega-3s Retained with drainage Drained with oil

Note: Nutritional values can vary by brand and added ingredients. Always check the product label for the most accurate information.

Health Benefits of Tuna

Beyond just calories, tuna flakes are a rich source of nutrients that offer numerous health benefits:

  • High-Quality Protein: Tuna is a complete protein, meaning it provides all the essential amino acids needed for muscle repair and growth.
  • Omega-3 Fatty Acids: These essential fats are crucial for heart and brain health, helping to reduce inflammation and lower the risk of cardiovascular disease.
  • Vitamins and Minerals: Tuna is packed with important vitamins like B12 and D, and minerals such as selenium and potassium.
  • Weight Management: The high protein and low-fat profile of water-packed tuna helps increase satiety, which can aid in weight loss.

Choosing the Right Tuna Flakes for Your Diet

When at the grocery store, consider your dietary goals to make the best choice:

  1. For weight loss or a low-calorie diet, opt for tuna flakes packed in water or brine. Always drain the liquid thoroughly to minimize sodium intake.
  2. If you're aiming for a richer flavor and don't mind the extra fat and calories, or if you want the benefits of the healthy fats from the packing oil, choose tuna packed in oil. You can still drain some of the oil to reduce the caloric load.
  3. To get the best balance of omega-3s and moderate mercury exposure, choose canned light tuna (skipjack) over albacore for more regular consumption.
  4. Consider low-sodium or 'no salt added' options to manage your sodium intake, which is typically higher in canned goods.
  5. Always read the label. Brands can vary in their formulations, and some may contain added ingredients that affect the nutritional information.

Simple Calorie-Reducing Tips for Tuna Flakes

If you prefer the taste of oil-packed tuna but want to reduce the calories, follow these simple steps:

  • Drain it thoroughly: Use a fork to press down on the tuna in the can, squeezing out as much oil or water as possible.
  • Rinse and pat dry: For water-packed tuna, you can rinse the flakes under cold water to remove excess sodium. Pat dry with a paper towel.
  • Use healthy, light binders: Instead of high-fat mayonnaise, mix your tuna flakes with Greek yogurt, hummus, or mashed avocado for a creamy texture with fewer calories.

Conclusion

In short, the number of calories in tuna flakes is not a single, fixed number. It is a spectrum heavily influenced by whether it's packed in water or oil. While oil-packed versions are significantly higher in calories, water-packed tuna flakes remain an excellent low-calorie, high-protein food. By understanding these nutritional differences, you can easily incorporate tuna into your diet in a way that supports your health and wellness goals. Choosing the right tuna flakes allows you to enjoy a flavorful and nutritious meal while staying mindful of your caloric intake.

Final Thoughts on Tuna Flake Calories

With just a few simple considerations—namely, the packing liquid and species—you can navigate the options and make an informed decision. For calorie counters, water-packed light tuna is the clear winner, but for those seeking a richer flavor and don't mind a higher fat content, the oil-packed varieties are still a healthy choice in moderation. No matter your preference, tuna flakes offer a convenient and beneficial addition to your diet.

Here is a useful guide on managing tuna intake for a healthy diet, including mercury considerations.

Frequently Asked Questions

Both are healthy, but they serve different dietary needs. Water-packed tuna has fewer calories and less fat, making it ideal for weight management. Oil-packed tuna has more calories but also higher levels of essential omega-3s if you don't drain the oil.

For 100g of drained tuna flakes, you can expect approximately 90-110 calories for water-packed and 150-180 calories for oil-packed, though figures can vary by brand and species.

While tuna is high in protein, daily consumption, particularly of albacore tuna, is not recommended due to mercury levels. The FDA suggests limiting albacore to one serving per week and light tuna to two to three servings per week to minimize exposure.

Healthy, low-calorie alternatives to mayonnaise include Greek yogurt, mashed avocado, or hummus. These options add a creamy texture and flavor without the high-fat content of traditional mayonnaise.

To lower the calories, thoroughly drain the oil from the can. You can use a fork to press the flakes and remove as much liquid as possible. Rinsing the flakes with water can also help reduce residual oil.

Yes, tuna flakes contain omega-3 fatty acids, especially DHA and EPA, which are beneficial for heart and brain health. However, some omega-3s are lost when draining oil-packed tuna.

Yes, albacore tuna generally contains more fat, more calories, and higher levels of mercury than light tuna. Light tuna, made from skipjack or yellowfin, is a leaner and safer option for more frequent consumption.

References

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Medical Disclaimer

This content is for informational purposes only and should not replace professional medical advice.