Key Takeaways
Salmon is an excellent source of heart-healthy omega-3 polyunsaturated fatty acids, including both DHA and EPA.Cooking salmon at high temperatures for prolonged periods of time can significantly reduce its omega-3 fatty acid content.Experts recommend baking, pan-searing, steaming, or cold-smoking salmon to preserve the most omega-3s.
Salmon is a great source of protein, vitamins, antioxidants, and healthy fats, especially omega-3 fatty acids. However, how you cook salmon may affect its omega-3 content, and there are methods that can actually preserve these heart-healthy fats.
Why Cooking Method Matters for Omega-3s
Omega-3 fatty acids are one of two types of polyunsaturated fats, also called “healthy” fats, that help support your overall health.
“Omega-3 fatty acids are polyunsaturated fats that play key roles in cell membranes, inflammation regulation, heart rhythm, and brain signaling,” Diane Lindsay-Adler, RDN, CDN, an assistant professor of pediatrics at New York Medical College, told Verywell.
Salmon is one of the best sources of omega-3 fatty acids, containing anywhere from around 1.5-1.85 grams of omega-3s per 3 ounce serving. However, cooking salmon at high temperatures can significantly lower this amount.
“Omega-3 fatty acids are sensitive to oxidation caused by heat, light, and oxygen, and high temperatures and long-term heat treatment during the cooking process can reduce omega-3 content,” Heewon Gray, PhD, RD, an associate professor and nutrition and dietetics concentration lead at the University of South Florida, told Verywell.
Instead of cooking salmon at temperatures that destroy these sensitive fats, both experts suggested using one of the methods below.
1. Baking at a Lower Temperature
Baking is one of the most common and convenient ways to cook salmon. It’s easy, hands-off, and the result is a delicious, moist filet.
Baked salmon recipes typically call for higher temperatures (400°F and above) for a crispy texture, but consider cooking at a lower temperature to preserve omega-3s.
“Baking at moderate temperatures (around 350°F) minimizes fat oxidation,” Lindsay-Adler said.
If baking isn’t your style, Lindsay-Adler also said you can pan-sear the fish quickly at a lower temperature. “Pan-searing over moderate heat retains omega-3s when cooking time is short,” she said.
2. Poaching to Avoid Dryness
According to Lindsay-Adler, the most common cooking methods for salmon can preserve most omega-3s if the fish isn’t overcooked. “Choosing gentle methods and avoiding charring or excessive dryness helps protect these delicate fats,” she said.
Poaching is another method for cooking salmon that can help avoid the dryness of other methods while preserving those healthy fats. “Steaming or poaching uses moist, low heat that preserves omega-3 integrity,” said Lindsay-Adler.
3. Cold-Smoking Preserves the Most Omega-3s
Cold-smoked salmon is a popular alternative to “cooked” salmon that results in a delicate, smoky filet. Of all the preparation methods that lend well to salmon, this method helps preserve the most omega-3 fatty acids.
“Cold-smoked salmon retains nearly all omega-3s because it is not exposed to heat,” Lindsay-Adler said. However, as the cold-smoking process requires a high amount of salt, she said it’s important to keep a close eye on sodium intake with cold-smoked salmon.
Pairing Salmon with Antioxidants to Boost Omega-3s
Interestingly, there’s one other type of nutrient in salmon that may help preserve those delicate fatty acids during cooking—antioxidants.
“Salmon naturally contains antioxidants that protect its omega-3s from oxidation within the tissue and support overall nutrient stability,” Gray said.
Gray explained that these natural antioxidants in salmon make it easy for your body to access the omega-3 fatty acids inside.
“Pairing the fish with antioxidant-rich ingredients, such as citrus, garlic, and other herbs, or drizzles of olive oil, offers additional protection and can enhance flavor,” she said.
Gray also said that marinating or canning salmon in antioxidant-rich sauces can further help reduce oxidation and preserve omega-3 fatty acids.
Verywell Health uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.
National Institutes of Health. Omega-3 Fatty Acids.
Szabo Z, Marosvölgyi T, Szabo E, et al. Effects of Repeated Heating on Fatty Acid Composition of Plant-Based Cooking Oils. Foods. 2022;11(2):192. doi:10.3390/foods11020192
Nagy K, Iacob B-C, Bodoki E, et al. Investigating the Thermal Stability of Omega Fatty Acid-Enriched Vegetable Oils. Foods. 2024;13(18):2961. doi:10.3390/foods13182961
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