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Bacalao vs salmón: cuál es más saludable según tu objetivo - Bacalalo

Cod vs salmon: which is healthier depending on your goal

March 6, 2026Lalo González Rodríguez⏱ 7 min de lectura

Summary: What are the nutritional differences between cod and salmon? Caloric composition: the determining factor Omega-3 content: which provides greater cardiovascular benefit?

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What are the nutritional differences between cod and salmon?

When we talk about premium fish, cod and salmon top the list of gastronomic preferences. However, their nutritional profiles differ considerably, which can influence your choice depending on your health goals.

Cod is characterized by being an extraordinary lean fish, with barely 0.7 grams of fat per 100 grams. This characteristic makes it an almost pure protein source. In contrast, salmon provides between 12-15 grams of fat for the same serving, these being predominantly high-quality polyunsaturated fatty acids.

In terms of protein, both fish offer complete amino acid profiles. Cod provides approximately 18-20 grams of protein per 100 grams, while salmon provides between 20-25 grams. Both contain the nine essential amino acids that our body cannot synthesize.

Caloric composition: the determining factor

Caloric density marks the most notable difference between these two species. Cod provides only 82 calories per 100 grams, making it an ideal option for hypocaloric diets. Salmon, due to its lipid content, reaches 180-200 calories for the same amount.

This caloric disparity does not imply nutritional superiority of one over the other. It simply reflects different compositions that adapt to specific nutritional goals. The choice will depend on your goal: maximizing protein while minimizing calories, or incorporating essential healthy fats.

Omega-3 content: which provides greater cardiovascular benefit?

Omega-3 fatty acids represent one of the most valued components in modern nutrition. Salmon stands out significantly in this aspect, providing between 1.8-2.3 grams of omega-3 per 100 grams, mainly EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid).

"Long-chain omega-3s present in fatty fish like salmon have demonstrated cardioprotective, anti-inflammatory, and neuroprotective effects superior to those of plant origin"

Cod, although it contains omega-3s, provides considerably smaller amounts: approximately 0.2-0.4 grams per 100 grams. However, this apparent disadvantage is compensated by its exceptional protein bioavailability and culinary versatility.

For those seeking to maximize omega-3 intake without food supplements, salmon represents the superior option. A 150-gram serving can meet the daily recommendations for these essential fatty acids.

Bioavailability and nutrient absorption

The food matrix influences nutrient absorption. Salmon, by containing natural fats, facilitates the absorption of fat-soluble vitamins such as D and E. Cod, due to its low fat content, allows for faster and lighter digestion, ideal for people with sensitive digestion.

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High-quality protein: species comparison

Both fish offer proteins of exceptional biological value, with PDCAAS (Protein Digestibility Corrected Amino Acid Score) scores close to the maximum value of 1.0. This metric evaluates both amino acid composition and digestibility.

Cod presents a specific advantage: its protein/calorie ratio is extraordinarily efficient. With 18-20 grams of protein in just 82 calories, it offers approximately 0.24 grams of protein per calorie. Salmon, although also excellent, provides a lower ratio due to its higher caloric content.

Essential amino acids: comparative profiles

Amino Acid Cod (mg/g protein) Salmon (mg/g protein)
Leucine 81 78
Lysine 89 87
Methionine 29 31
Tryptophan 11 12

These minimal differences confirm that both species provide complete and balanced amino acid profiles, suitable for muscle protein synthesis and the maintenance of essential physiological functions.

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Which to choose based on your fat loss goal?

For body recomposition and fat loss goals, cod emerges as the preferential option. Its extraordinary nutritional profile allows for maximizing protein satiety while minimizing total caloric intake.

The diet-induced thermogenesis (DIT) of cod is particularly favorable. Lean proteins require approximately 25-30% of their energy to be metabolized, making each portion a natural metabolic ally.

However, salmon should not be completely ruled out in caloric deficit phases. Its omega-3 fats can promote lipid oxidation and maintain insulin sensitivity during prolonged caloric restrictions.

Inclusion strategies in hypocaloric diets

  • Cod: ideal for main meals where maximizing protein is desired
  • Salmon: perfect in moderate amounts to ensure essential fat intake
  • Alternating combination: cod 4-5 days a week, salmon 2-3 days
  • Preparations: steamed, grilled, or baked without added oils
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Specific benefits of salmon for cardiovascular health

Salmon stands out for its cardioprotective capacity demonstrated in multiple epidemiological studies. The EPA and DHA fatty acids present in its composition exert systemic anti-inflammatory effects, reducing markers such as C-reactive protein.

These bioactive lipids also favorably modulate the blood lipid profile. They increase HDL lipoproteins ("good" cholesterol) while improving the size and density of LDL particles, making them less atherogenic.

The natural presence of astaxanthin, a carotenoid that gives salmon its characteristic pink color, adds additional antioxidant properties. This compound protects against oxidative stress and can contribute to endothelial health.

How many weekly servings are recommended?

International nutritional guidelines suggest 2-3 servings of fatty fish per week to optimize cardiovascular benefits. One serving is approximately 120-150 grams of cooked salmon.

Advantages of cod for athletes and active individuals

Cod is an ideal protein source for athletes and physically active individuals. Its rapid digestibility allows for consumption within specific nutritional windows without causing gastrointestinal discomfort during training.

Its high content of glycine and proline promotes collagen synthesis, contributing to joint and tendon health. These semi-essential amino acids are particularly relevant in high-impact or high-mechanical demand sports.

The virtual absence of fats facilitates its inclusion in pre-workout meals, providing rapidly available amino acids without slowing gastric emptying.

Optimal nutritional timing for athletes

To maximize the benefits of cod for sports performance, consider these key times:

  • Immediate post-workout: 100-150g to optimize protein synthesis
  • Recovery dinners: combined with complex carbohydrates
  • Rest days: as the main protein source in balanced meals

Conclusions

  • What are the nutritional differences between cod and salmon?: When we talk about premium fish, cod and salmon top the list of gastronomic preferences.
  • Omega-3 content: which provides greater cardiovascular benefit?: Omega-3 fatty acids represent one of the most valued components in modern nutrition.
  • High-quality protein: comparison between species: Both fish offer proteins of exceptional biological value, with PDCAAS (Protein Digestibility Corrected Amino Acid Score) close to the maximum value of 1.0.
  • Which to choose based on your fat loss goal?: For body recomposition and fat loss goals, cod emerges as the preferential option.
  • Specific benefits of salmon for cardiovascular health: Salmon stands out for its cardioprotective capacity demonstrated in multiple epidemiological studies.
  • Advantages of cod for athletes and active individuals: Cod is an ideal protein source for athletes and physically active individuals.
  • Frequently asked questions about cod vs salmon: Can I alternate cod and salmon in my weekly diet?

Frequently asked questions about cod vs salmon

Can I alternate cod and salmon in my weekly diet?
Absolutely. This strategy allows you to obtain the specific benefits of each species: lean protein from cod and omega-3 from salmon, creating an optimal complementary nutritional profile.

Does desalted cod retain its nutritional properties?
The artisanal desalting process fully preserves proteins and micronutrients. Only the sodium content is reduced, even improving the nutritional profile for people with hypertension.

Which preparation best preserves salmon's omega-3s?
Gentle cooking methods such as steaming, papillote, or moderate oven temperatures (maximum 180°C) minimize the oxidation of these heat-sensitive fatty acids.

The choice between cod and salmon should not be exclusive but strategic. Both fish offer unique nutritional benefits that perfectly complement each other in a balanced and conscious diet.

Discover our selection of desalted cod at Bacalalo.

→ View our selection of desalted cod from Iceland

→ View our selection of artisanal smoked salmon

Gourmet smoked salmon

Lo que cierra una receta

Gourmet smoked salmon

El detalle que separa un plato de un buen plato.

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Lalo González Rodríguez

Lalo González Rodríguez

Master Cod Craftsman · Founder of Bacalalo

Expert in salted fish and founder of Bacalalo with over 35 years of experience selecting the finest pieces of Icelandic cod and gourmet seafood at the Mercat del Ninot in Barcelona.

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