How Much Salmon Can You Eat In a Week? | FDA Guidance

Most adults can safely eat 8 to 12 ounces (2 to 3 servings) of salmon per week, as it is a low-mercury fish classified under the FDA’s “Best.

Salmon has a curious reputation. One week it’s a superfood loaded with omega-3s, the next you’re hearing warnings about mercury in fish and wondering if your weekly salmon habit is actually safe. The confusion makes sense — seafood guidelines vary by species, size, and even where the fish was caught.

The honest answer is reassuring: salmon is one of the safest fish you can eat regularly. Federal health agencies have studied it closely, and the data supports eating it several times a week for most people. Here’s what the guidelines actually say, who needs to be more careful, and how to fit salmon into your diet without second-guessing.

What The FDA And NHS Say About Salmon Servings

The core advice from the FDA and EPA is clear. Adults can eat 8 to 12 ounces of low-mercury fish per week — that’s 2 to 3 servings, with one serving being about 4 ounces of cooked fish, roughly the size of your palm. Salmon qualifies easily.

The NHS in the UK takes a similar approach, recommending at least 2 portions of fish per week, with at least 1 of those being oily fish like salmon. The overlap between these two major health authorities gives you a solid, evidence-backed target to aim for.

A serving size of 4 ounces matters more than you might think. A large restaurant fillet or a thick salmon steak could easily count as two servings. If you’re cooking at home, weigh or eyeball your portions to stay within the weekly range.

Why The Same Advice Applies To Canned Salmon

Canned salmon — pink, chum, coho, red sockeye — is treated the same as fresh. All varieties are low in mercury and safe within the same 2 to 3 servings per week guideline. Just check the label for added sodium if you’re watching your salt intake.

Why Mercury Fear Hits Salmon The Hardest

Mercury in fish feels scary because the scary stories are about the wrong fish. Swordfish, shark, king mackerel, and tilefish carry higher mercury levels because they’re large, long-lived predators that accumulate methyl mercury over decades.

Salmon is the opposite. It’s a relatively short-lived fish with consistently low mercury levels — the FDA classifies it as a “Best Choices” option specifically because its mercury concentration is so low that frequent eating is safe. The confusion happens when people hear “mercury in fish” and assume it applies equally to all seafood.

The FDA has set a safety limit of 1.0 parts per million for methyl mercury in fish, and that limit includes a built-in 1,000 percent safety factor. Salmon consistently tests well below that threshold, even with regular consumption.

• Best Choices (eat 2-3 servings/week): Salmon, canned light tuna, shrimp, pollock, catfish, tilapia.
• Good Choices (eat 1 serving/week): Halibut, cod, mahi-mahi, canned albacore tuna.
• Choices to Avoid (for pregnant/breastfeeding women and children): Swordfish, shark, king mackerel, tilefish.
• Mercury comparison: Salmon averages around 0.022 ppm mercury — roughly 45 times lower than swordfish.
• Best Choices variety rule: Eating a mix of “Best Choices” fish gives you a wider range of nutrients while keeping mercury exposure low.

If you’re worried about mercury, the most effective step isn’t cutting salmon — it’s swapping higher-mercury fish for lower-mercury ones. One serving of salmon replaces a serving of something riskier.

Pregnancy, Children, And Salmon Guidelines

Pregnant and breastfeeding individuals can and should eat salmon. The FDA recommends 8 to 12 ounces per week from low-mercury varieties, and salmon is at the top of that list. The EPA’s FDA fish advice explicitly includes salmon as a top choice during pregnancy.

Children also benefit from salmon, though portion sizes are smaller. The EPA advises feeding children low-mercury fish like salmon in amounts based on their calorie needs — generally less than 8 ounces per week for younger kids. A child’s serving is about 1 to 2 ounces, roughly the size of their palm rather than yours.

Some study data — cited by a seafood company in a research overview — suggests that consuming roughly 10 ounces of salmon per week during pregnancy was linked to a modest IQ benefit in children by age 9. It’s important to frame this as a single-study observation, not a guarantee, but it aligns with the broader evidence that omega-3s from fish support fetal brain development.

How To Balance Salmon With Other Seafood

Eating salmon every week is fine, but the FDA encourages variety — not because salmon is risky, but because different fish offer different nutrients. Mixing in canned light tuna, shrimp, pollock, or tilapia diversifies your omega-3, vitamin D, and selenium intake.

If you eat salmon multiple times per week, you’re well within the safe zone. The concern would only arise if salmon replaced all other protein sources to the point where you were consuming far more than 12 ounces weekly for months at a time — a situation that’s uncommon for most people.

1. Stick to 2-3 servings per week. That’s 8-12 ounces total for adults. One large fillet can count as two servings.
2. Rotate your fish choices. Alternate salmon with canned light tuna, shrimp, or mackerel to get a broader nutrient profile.
3. Watch portion sizes, not just frequency. A 6-ounce fillet is 1.5 servings. If you’re tracking, measure cooked weight.
4. Choose wild or farmed — either is fine. Both are low in mercury. Farmed salmon may have slightly more omega-3s but also more contaminants; neither poses a safety concern at recommended intake levels.

The best choices salmon classification from the EPA reinforces that you don’t need to overthink this. If you’re eating salmon a couple of times a week, you’re following the same guidance public health experts use for themselves.

What Happens If You Eat Salmon Daily

Eating salmon every day — say, a 4-ounce portion for dinner — puts you at about 28 ounces per week, more than double the standard recommendation. Is that dangerous? For most people, probably not, but the margin of safety shrinks.

Salmon’s mercury content is low enough that even daily consumption likely stays under the FDA’s safety limit for methyl mercury, which has a 1,000 percent safety factor built in. The bigger concern is dietary monotony. Relying on one fish means you miss out on nutrients found in other seafood, like the selenium in tuna or the iodine in cod.

Some sources — like a pharmacy blog — suggest men and non-pregnant women can safely consume up to 4 portions of oily fish per week, or about 16 ounces. That’s a Tier 2 perspective, not official guidance, but it indicates the safety margin is generous. Still, the conservative recommendation of 8-12 ounces per week remains the safest and most broadly applicable target.

The Bottom Line

For most adults, 8 to 12 ounces of salmon per week — roughly 2 to 3 servings — is both safe and beneficial. Pregnant women, children, and older adults can follow the same range with smaller individual portions. Salmon’s low mercury levels and high omega-3 content make it one of the best choices you can make at the seafood counter.

If you’re serving salmon to your family tonight, measure a 4-ounce portion per adult, pair it with a vegetable and a whole grain, and feel confident that you’re hitting the weekly target in one delicious meal. Your registered dietitian or primary care provider can confirm whether your personal health conditions — like kidney function or autoimmune concerns — suggest a different limit.