You can safely eat salmon two to three times per week. The FDA and EPA jointly classify salmon as a “Best Choice” fish, their highest safety rating, and recommend adults eat two to three servings of any Best Choice fish per week. A standard serving is about 4 ounces, roughly the size of your palm. Because salmon is so low in mercury, it’s one of the safest fish to eat regularly.
Why Salmon Gets the Highest Safety Rating
Mercury is the main reason health agencies set limits on fish consumption at all. Salmon contains remarkably little of it. Fresh or frozen salmon averages just 0.022 parts per million of mercury, and canned salmon is even lower at 0.014 ppm. For comparison, albacore tuna typically comes in around 0.35 ppm, roughly 16 times higher than fresh salmon. This is why salmon lands in the “Best Choice” category rather than the more restricted tiers.
Other contaminants like PCBs and dioxins are also well below safety thresholds in both farmed and wild salmon. Early studies raised concerns about higher PCB levels in farmed fish, but follow-up research hasn’t confirmed those findings. The scientific consensus today is that both farmed and wild salmon are safe. Both types also fall well below the EU’s maximum limits for dioxins, PCBs, mercury, and arsenic.
What Counts as a Serving
For adults, one serving is 4 ounces of cooked fish, about the size of your palm. At two to three servings per week, that puts you at 8 to 12 ounces total. The Dietary Guidelines for Americans recommend at least 8 ounces of seafood per week based on a 2,000-calorie diet, so hitting the upper end of the salmon range easily meets that target on its own.
You don’t need to eat only salmon, of course. The guidelines encourage variety among low-mercury fish. But if salmon is your go-to, eating it three times a week is perfectly fine from a safety standpoint.
Guidelines for Pregnancy and Children
Pregnant and breastfeeding women are advised to eat 8 to 12 ounces of low-mercury seafood per week, which works out to two to three servings at 4 ounces each. Salmon is specifically named as one of the best options for this group because of its low mercury content and high omega-3 levels, which support fetal brain development.
Children’s serving sizes are smaller and scale with age:
- Ages 1 to 3: about 1 ounce per serving
- Ages 4 to 7: about 2 ounces per serving
- Ages 8 to 10: about 3 ounces per serving
- Age 11 and up: about 4 ounces per serving
Kids should eat two servings per week from the Best Choice list, and salmon is one of the fish the Dietary Guidelines specifically recommends for children because of its especially low mercury levels.
The Omega-3 Payoff
Salmon is one of the richest food sources of EPA and DHA, the two omega-3 fatty acids linked to heart health, brain function, and reduced inflammation. A 3-ounce serving of cooked Atlantic salmon delivers about 1.2 grams of EPA, plus 0.35 to 0.59 grams of DHA depending on whether it’s wild or farmed. That single serving already exceeds most recommended weekly intakes for omega-3s. A Norwegian study found that just one 150-gram portion (about 5 ounces) of either farmed or wild Atlantic salmon per week provides over 1.8 grams of combined EPA and DHA, more than the recommended weekly amount for adults.
Farmed salmon tends to have slightly more total fat and therefore a bit more EPA per serving, while wild salmon is leaner. Both are excellent sources, and the difference is small enough that it shouldn’t drive your buying decisions.
Can You Eat Salmon Every Day?
Eating salmon daily isn’t specifically warned against by any major health agency, and its mercury levels are low enough that daily consumption is unlikely to cause mercury accumulation problems. The two-to-three-times-per-week guideline is partly about encouraging variety in your seafood intake, since different fish provide different nutrients and limiting yourself to one species means missing out on others.
If you genuinely enjoy salmon and want to eat it four or five times a week, the contaminant risk remains very low. The Washington State Department of Health, which monitors fish safety closely, notes that both wild and farmed salmon have low levels of mercury, PCBs, and other contaminants. The practical ceiling on salmon consumption is less about toxicity and more about dietary balance.
How Cooking Affects the Benefits
Your cooking method influences how much omega-3 you actually get from each serving. Steaming preserves the most EPA and DHA because it operates at a lower temperature (around 100°C) compared to oven methods. Baking in foil at 160°C retains less, with EPA retention dropping from roughly 55-60% with steaming to about 37% with foil baking in some studies. Grilling and deep-frying preserve even less.
This doesn’t mean baked or grilled salmon is nutritionally poor. Salmon starts with so much omega-3 that even after some cooking losses, it remains one of the best sources available. But if you’re trying to maximize the nutritional return, steaming or poaching will get you the most out of each fillet. Baking at moderate temperatures is a solid middle ground that most people find more appealing than steamed fish.
Farmed vs. Wild: Which Is Safer to Eat Often?
Both are safe for regular consumption. Recent Norwegian research actually found that wild salmon had about three times higher concentrations of dioxins, dioxin-like PCBs, and mercury compared to farmed salmon, though all levels in both types remained well below regulatory limits. This flips the older narrative that farmed fish was the more contaminated option.
From a practical standpoint, the choice between farmed and wild salmon comes down to taste preference, price, and environmental values rather than safety. If you’re eating salmon two to three times per week, neither type poses a meaningful contaminant risk.