Can You Eat Tuna While Pregnant? Canned, Albacore, Ahi and Sushi, Sorted by Mercury (2026 Guide)

Short answer: yes, you can eat tuna while pregnant, and for most people you probably should eat some fish. The catch is that "tuna" is not one fish. It is a family of species that range from one of the best pregnancy choices in the store (canned light tuna) to a fish on the FDA's do-not-eat list (bigeye). The whole question comes down to which tuna, how it is prepared, and how often.

This guide sorts every version you will actually meet: the canned aisle, the tuna sandwich, the seared ahi, the poke bowl, and the sushi menu.

Medically reviewed by: [placeholder]. Last updated: October 26, 2026.

The quick answer, by type

A serving is about 4 ounces cooked, roughly the size of a deck of cards, or one standard 3 to 5 ounce can.

These lines come straight from the FDA and EPA advice about eating fish, which sorts seafood into Best Choices (2 to 3 servings a week), Good Choices (1 serving a week) and Choices to Avoid. Canned light tuna is a Best Choice. Albacore and yellowfin are Good Choices. Bigeye tuna sits on the avoid list with shark, swordfish, king mackerel, marlin, orange roughy and tilefish.

Why the species matters: mercury

The concern with tuna is methylmercury. It builds up in fish over their lifetime, so big, old, predatory fish carry more of it than small, young ones. Skipjack, the fish inside most cans of light tuna, is small and short-lived, so it stays low. Bigeye tuna is large, long-lived and eats other fish, so it accumulates a lot.

Mercury matters in pregnancy because it crosses the placenta and can affect the baby's developing brain and nervous system. That is why the limits above are weekly, not daily, and why the FDA's advice is about averages over time rather than any single meal. One serving does not poison anything. The guidance exists so the running average stays low across nine months.

One thing the mercury headlines leave out: the same agencies actively want pregnant women to eat fish. The FDA and EPA recommend 8 to 12 ounces of lower-mercury seafood per week during pregnancy, and ACOG's nutrition guidance agrees, because the omega-3 fats and protein in fish support that same developing brain. Skipping fish entirely is not the cautious choice. Picking the low-mercury kinds is.

The canned aisle: light vs. white

This is the one label distinction worth memorizing.

• "Light" or "chunk light" tuna is usually skipjack. Low mercury, Best Choice, fine 2 to 3 times a week.
• "White" or "albacore" tuna is a bigger fish with roughly three times the mercury of light tuna. Still allowed, but the limit is 1 serving a week.
• Oil vs. water makes no difference to mercury. Pick either. Water-packed is leaner, oil-packed carries a bit more flavor and calories.

If the can just says "tuna" with no species, treat it as the cautious case and check the fine print, since the species is what sets your weekly limit. This is exactly the kind of label ambiguity the Oli app is built for: scan the barcode and it checks the species and every other ingredient against pregnancy guidance. Our free pregnancy food checker does the same for anything you type in.

Tuna sandwiches and tuna salad: the other risk

Mercury is not the only thing to check, because a lot of tuna is eaten as tuna salad, and that moves the question from mercury to Listeria.

• Homemade tuna salad from a fresh-opened can is fine. Commercial mayo is pasteurized, so the old raw-egg worry does not apply. Eat it fresh or keep it properly refrigerated.
• Premade tuna salad from the deli case or salad bar is on the FDA's avoid list for pregnancy, along with store-made ham salad and chicken salad. The issue is the same ready-to-eat handling risk as cold cuts: Listeria can get in during preparation and keeps growing in the fridge. We cover that logic in our deli meat guide.
• Made-to-order tuna sandwiches at a sandwich shop sit between those two. The tuna is almost always canned skipjack, so mercury is the easy part. Freshness and handling are the variable. A busy shop making it to order is a different situation from a salad that sat in a case all day.

Cooked tuna steaks, seared ahi and poke

A fully cooked yellowfin or ahi steak is a Good Choice: enjoy it, count it as your one higher-mercury serving that week.

Seared ahi and poke are a different question, because the inside is raw. Raw fish during pregnancy is a food-safety question (parasites and bacteria) rather than a mercury question, and the standard advice is to skip raw and undercooked fish until the baby arrives. The same goes for tuna sushi and sashimi: cooked rolls like shrimp tempura or eel are fine, raw-fish rolls are the ones to pass on. And note the menu trap: the tuna on sushi menus is often bigeye, which fails both tests at once.

If you are staring down a restaurant menu trying to apply all this, the practical move is simple: order the cooked version, and ask which tuna it is.

The UK rule, if you are reading NHS guidance

The NHS draws the same picture with different units: limit tuna to no more than 4 cans or 2 fresh steaks per week, avoid shark, swordfish and marlin entirely, and skip raw fish that has not been frozen first. If you are following NHS numbers, they land in the same place as the FDA's: canned light tuna a few times a week is fine, big predatory fish are not.

FAQ

How much canned tuna can I eat while pregnant? Light (skipjack) tuna: 2 to 3 servings a week, where a serving is a standard can or about 4 ounces. Albacore or white tuna: 1 serving a week. These are averages, so one tuna-heavy week is not an emergency. Just balance the next one.

Is albacore tuna safe during pregnancy? Yes, limited to about one serving a week. Albacore carries roughly three times the mercury of light tuna, which is why it sits in the FDA's once-a-week category instead of the 2-to-3 group.

Can I eat ahi tuna while pregnant? Cooked through, yes, once a week. Seared rare or raw in poke, skip it for now: the raw center is the problem, separate from mercury. And confirm it is yellowfin, since menus sometimes use "ahi" for bigeye, which is on the do-not-eat list.

Can I eat tuna sushi while pregnant? Raw tuna rolls and nigiri are the ones to skip, both for the raw-fish rule and because sushi tuna is often bigeye. Cooked rolls at the same restaurant are fine.

What if I already ate bigeye or a lot of tuna? Do not panic. The weekly limits protect your average exposure over the whole pregnancy, and a single meal does not change that average much. Mention it at your next appointment and go back to the low-mercury choices.

Is tuna actually good for pregnancy? Yes, within the limits. Tuna brings protein, vitamin D and omega-3 fats, and the official advice is to eat 8 to 12 ounces of low-mercury seafood a week, not to avoid fish. Canned light tuna is one of the cheapest ways to hit that number.

Does mercury cook out of tuna? No. Unlike bacteria, mercury is in the muscle itself and no amount of cooking removes it. Heat fixes the Listeria risk on ready-to-eat food, but the species you pick is the only mercury control you have.

Sources: FDA/EPA advice about eating fish, EPA: choose fish and shellfish wisely, ACOG nutrition during pregnancy, NHS foods to avoid in pregnancy, FDA food safety for moms-to-be.

This article is for informational purposes and is not medical advice. Always confirm with your healthcare provider.