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How Many Calories Are in a Mussel? A Nutritional Breakdown

4 min read

According to USDA data, a single medium mussel contains approximately 14 calories, making this shellfish a low-calorie addition to any diet. However, the total calorie count for a meal depends on the serving size and cooking method, so understanding the full nutritional profile is essential for healthy eating.

Quick Summary

This article details the caloric content of mussels per individual piece and per serving, explaining how preparation methods influence the final nutritional value. It also compares mussels to other popular seafood options, showcasing their rich profile of protein, vitamins, and omega-3 fatty acids.

Key Points

  • Low in Calories: A single medium mussel contains approximately 14 calories, making it a very low-calorie food option.

  • High in Protein: Mussels are an excellent source of lean, high-quality protein, with about 20 grams per 3-ounce serving.

  • Rich in Omega-3s: Mussels are packed with heart-healthy omega-3 fatty acids, which are beneficial for brain and heart health.

  • Abundant in Vitamin B12: One serving provides well over the daily recommended amount of Vitamin B12, important for blood cell and nerve function.

  • Cooking Method Matters: Steaming or boiling mussels keeps them low in calories, while frying or adding rich sauces increases the caloric content.

  • Superior Mineral Source: They are a great source of iron, selenium, zinc, and manganese, supporting various bodily functions.

In This Article

Mussels: The Calorie Count and Beyond

Mussels are a popular and versatile type of shellfish enjoyed worldwide. Their nutritional value, particularly their low-calorie and high-protein content, makes them an excellent choice for a healthy diet. The exact calorie count can vary depending on the mussel's size and how it is cooked and served.

Calorie Count by Size and Serving

When calculating the calories for a single mussel, the size is the most important factor. Here is a general breakdown based on USDA and other nutritional data:

  • Small Mussel: Approximately 9 calories.
  • Medium Mussel: Approximately 14 calories.
  • Large Mussel: Approximately 17 calories.

For a standard 3-ounce (85-gram) serving of steamed blue mussels, the calorie count is around 146 calories. If you are preparing a large dish, a full cup of mussel meat contains about 129 calories. These figures highlight how mussels offer a satisfying meal without a high-calorie cost, especially when steamed or boiled without added oils or butter.

The Impact of Cooking Methods on Calories

The way you prepare mussels can significantly alter their final calorie count. While the raw mussel meat is naturally low in calories and fat, adding certain ingredients can increase the caloric density of the dish. Here is a look at the difference:

  • Steamed or Boiled Mussels: This is the most calorie-efficient way to prepare mussels. Using water, a little wine, or a light broth to steam them keeps the calories minimal. A 100-gram serving of cooked mussels (without added fats) contains about 150 calories.
  • Fried Mussels: Frying introduces oils and batter, which dramatically increase both the calorie and fat content. This preparation method will have a much higher caloric value compared to steaming.
  • Mussels in Rich Sauces: Recipes like mussels in a creamy garlic or butter-based sauce will have a significantly higher calorie count. The sauce, not the shellfish itself, is the primary source of the extra calories.

To keep your mussel dish healthy, opt for steaming and flavor it with herbs, garlic, and a splash of wine instead of heavy sauces or frying. This preserves the natural, low-calorie profile of the shellfish while maximizing flavor.

Nutritional Powerhouse: More Than Just Calories

Beyond their favorable calorie count, mussels are packed with essential nutrients that contribute to overall health. They are often highlighted for their high-quality protein, omega-3 fatty acids, and impressive vitamin and mineral content. A single serving of mussels can provide a significant portion of your daily recommended intake for key nutrients.

  • Excellent source of protein: Mussels contain all nine essential amino acids, making them a complete protein source. A 3-ounce serving offers around 20 grams of protein, supporting muscle growth and repair.
  • Rich in Omega-3 fatty acids: These heart-healthy fats are beneficial for brain function and reducing inflammation. Mussels contain more marine omega-3s than many other types of shellfish.
  • High in Vitamin B12: Mussels are one of the richest food sources of Vitamin B12, which is crucial for nerve function and red blood cell production.
  • Significant Mineral Content: Mussels are excellent sources of iron, selenium, zinc, and manganese, all of which play vital roles in metabolic processes and immune function.

Comparison Table: Mussels vs. Other Seafood (per 100g)

Nutrient Mussels (Cooked) Salmon Oysters (Cooked) Shrimp (Cooked) Red Meat (Sirloin)
Calories ~150 kcal ~208 kcal ~102 kcal ~99 kcal ~160 kcal
Protein ~13.8g ~20.4g ~11.4g ~24g ~22.2g
Fat ~4.4g ~13.4g ~3.4g ~0.5g ~2.1g (Saturated)
Omega-3s High Very High Good Low Minimal
Iron Excellent Good Excellent Good Excellent
Vitamin B12 Excellent Excellent Excellent Excellent Excellent

As the table shows, mussels are a competitive protein source with fewer calories and less fat than many other options, making them a very lean and healthy choice.

Incorporating Mussels into Your Diet

There are countless ways to enjoy mussels while keeping an eye on their caloric impact. Here are a few low-calorie preparation suggestions:

  1. Steamed with Garlic and Herbs: Sauté garlic and fresh parsley in a little olive oil, then add mussels and a splash of white wine or water. Steam until they open.
  2. Mussel Soup: Use a clear, vegetable-based broth and add mussels, finely chopped vegetables, and herbs. This makes a light, satisfying meal.
  3. Mussel Salad: Add cooked, chilled mussel meat to a fresh salad with a light vinaigrette. The protein from the mussels will make it a more filling meal.
  4. Marinière Style (Lightened): Use less butter and increase the amount of white wine, shallots, and parsley for a classic dish that is lighter on calories.

Conclusion

In conclusion, a single medium mussel contains a very low number of calories, around 14, and is part of a larger nutritional picture that is overwhelmingly positive. As a high-protein, low-fat source of essential vitamins and minerals, particularly omega-3s and B12, mussels offer significant health benefits. The key to maintaining their healthy profile is to choose low-calorie cooking methods like steaming or boiling over frying or heavy sauces. Incorporating mussels into a balanced diet is an effective and delicious way to boost nutrient intake without compromising on health goals.

For more detailed nutritional information and recipe inspiration, a good resource to explore is this comprehensive guide on mussels.

Frequently Asked Questions

Frequently Asked Questions

A 100-gram (approx. 3.5 ounces) serving of cooked mussels contains about 150 calories, though this can vary slightly based on the cooking method and any added ingredients.

Yes, mussels are excellent for weight loss. They are low in calories and high in protein, which helps you feel full and satisfied. Their rich nutrient profile supports overall health without a high-calorie count.

The calorie count of the mussel meat itself does not change with cooking. However, a portion of cooked mussel meat will be more calorically dense by weight than raw meat because cooking removes water content. The total calories of the dish depend on any fats added during cooking, such as oil or butter.

Mussels generally have slightly fewer calories than clams. For a 100-gram serving, cooked mussels have about 150 calories, while clams can have slightly more, around 172-202 calories, depending on the type and preparation.

Yes, the fat in mussels is considered healthy. They are a good source of omega-3 fatty acids, a beneficial type of polyunsaturated fat that promotes heart and brain health.

The best low-calorie cooking method for mussels is steaming or boiling. Use water, a splash of wine, or a light broth with herbs and garlic to add flavor without adding significant calories.

Yes, mussels are an excellent source of iron. A serving can provide a significant portion of your daily recommended iron intake, which is essential for red blood cell formation and preventing fatigue.

References

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Medical Disclaimer

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