Is Seafood Safe for Pregnancy? What to Eat & Avoid

Quick verdict: ⚠️ Safe with limits. Eating certain types of seafood in moderation is not only safe but highly recommended during pregnancy for its vital nutrients, while high-mercury and raw options should be avoided. Consult FDA/EPA guidelines for safe choices and amounts.

You've probably heard conflicting advice about eating seafood during pregnancy, and if you're like many expecting parents, you might be wondering, "Is seafood safe for pregnancy?" It's a common concern, especially with so much information out there about mercury levels and food safety. Whether you're craving a salmon fillet or panicking because you accidentally ate a piece of tuna, we understand that worry.

The good news is that for most types of seafood, the answer is a resounding yes! Not only is it safe, but many varieties are incredibly beneficial for both you and your developing baby. The key lies in making smart choices about *which* fish to eat, *how much*, and ensuring it's properly cooked. We're here to cut through the confusion and give you clear, evidence-based guidance so you can enjoy the many advantages seafood has to offer, without the stress.

What is Seafood?

Seafood encompasses any form of sea life regarded as food by humans, primarily fish and shellfish. This vast category includes everything from finfish like salmon, cod, and tuna, to shellfish such as shrimp, crab, lobster, oysters, mussels, and clams. For centuries, communities worldwide have relied on seafood as a staple, appreciating its unique flavors and nutritional density.

Beyond being a culinary delight, seafood is a powerhouse of essential nutrients. It's an excellent source of lean protein, which is vital for building and repairing tissues in both mother and baby during pregnancy. Many fish are also rich in vitamins and minerals, including vitamin D, B vitamins (especially B12), iodine, selenium, and iron. However, the most celebrated nutrients in seafood, particularly during pregnancy, are the omega-3 fatty acids, specifically DHA (docosahexaenoic acid) and EPA (eicosapentaenoic acid). These healthy fats play a critical role in fetal brain and eye development, making seafood a highly recommended component of a healthy pregnancy diet, provided the right choices are made.

Is Seafood Safe During Pregnancy?

Y

The primary concern with seafood during pregnancy is mercury, a naturally occurring element that can accumulate in fish. When consumed in large amounts, especially in its organic form, methylmercury, it can be toxic to the developing nervous system of a fetus. This is why certain high-mercury fish are best avoided. However, the vast majority of fish available are low in mercury and packed with nutrients that far outweigh any potential risk.

The benefits of consuming seafood, particularly those rich in omega-3 fatty acids like DHA and EPA, are substantial. These fats are crucial for your baby's brain and eye development, and studies suggest they may also play a role in reducing the risk of preterm birth, improving birth weight, and supporting maternal mood. Beyond omega-3s, seafood provides essential protein, iron, iodine, and vitamin D, all critical for a healthy pregnancy. Therefore, the goal isn't to avoid seafood entirely, but to choose wisely and prepare it safely.

What types of seafood are safe during pregnancy?

When you're pregnant, focusing on low-mercury seafood options is paramount. The good news is there are plenty of delicious and nutritious choices available. The FDA and EPA provide an extensive list of "Best Choices" for pregnant individuals, recommending 2-3 servings per week from this category. Each serving is typically 4 ounces (about the size of your palm).

Here are some of the top picks for seafood safe for pregnancy:

• Salmon: An excellent source of omega-3s, vitamin D, and protein. Wild-caught Alaskan salmon is often praised for its lower mercury levels.
• Cod: A lean, flaky white fish that's low in mercury and a good source of protein and B vitamins.
• Tilapia: Another mild, low-mercury white fish, popular for its versatility.
• Shrimp: A very popular shellfish, low in mercury and a good source of protein and selenium.
• Sardines: Small, oily fish packed with omega-3s, calcium (if eaten with bones), and vitamin D. They are also very low in mercury.
• Trout: Especially freshwater trout, it's a great source of omega-3s and low in mercury.
• Light Canned Tuna: While some tuna should be limited, canned light tuna (typically skipjack) is considered a "Good Choice" by the FDA/EPA, allowing for 1 serving per week.
• Catfish: A low-mercury freshwater fish, a good source of protein.
• Pollock: Often used in fish sticks and fast-food fish sandwiches, it's a low-mercury option.
• Haddock: Similar to cod, it's a lean white fish with low mercury.
• Mussels, Oysters, Clams: These shellfish are generally very low in mercury. However, they must be thoroughly cooked to eliminate bacteria and viruses.

Remember that proper cooking is just as important as choosing low-mercury options. All seafood should be cooked to an internal temperature of 145°F (63°C) to kill harmful bacteria and parasites, which can pose a risk during pregnancy.

How much seafood is safe to eat while pregnant?

The official guidelines from the FDA and EPA recommend that pregnant and breastfeeding individuals consume 8 to 12 ounces of low-mercury seafood per week. This typically translates to two to three servings per week, with one serving being about 4 ounces (roughly the size and thickness of your palm).

It's important to choose from the "Best Choices" list for these 2-3 servings. For fish on the "Good Choices" list (like canned light tuna), you should limit consumption to one serving (4 ounces) per week. Fish on the "Choices to Avoid" list should not be eaten at all during pregnancy.

Here’s a quick guide to help you plan your weekly intake:

Variety is also key. By selecting different types of low-mercury fish, you ensure a broader range of nutrients and minimize potential exposure to any single contaminant. Always check local advisories for fish caught recreationally, as mercury levels can vary by specific waterways.

Can pregnant women eat canned tuna or salmon?

Yes, pregnant women can generally eat canned tuna and salmon, but with important distinctions and limits. Canned fish can be a convenient and affordable way to include beneficial omega-3s and protein in your diet, but the mercury content varies significantly between types of tuna.

• Canned Light Tuna: This is typically made from smaller skipjack tuna, which has lower mercury levels. The FDA and EPA classify canned light tuna as a "Good Choice," recommending that pregnant individuals limit their intake to one serving (4 ounces) per week. This still allows you to get some of the benefits without excess mercury.
• Canned Albacore (White) Tuna: Albacore tuna is a larger species and tends to have higher mercury levels than skipjack tuna. Because of this, the FDA and EPA advise pregnant people to avoid canned albacore tuna.
• Canned Salmon: This is an excellent choice for pregnancy. Canned salmon (like pink or red salmon) is generally low in mercury and rich in omega-3 fatty acids, protein, and vitamin D. It falls under the "Best Choices" category, and you can safely enjoy 2-3 servings (8-12 ounces) per week.

When choosing canned tuna, always check the label to ensure it specifies "light" tuna if you plan to consume it during pregnancy. For canned salmon, most varieties are safe and beneficial. Ensure all canned fish is consumed as part of a balanced diet and within the recommended weekly limits.

Is raw fish or sushi safe for pregnant women?

Generally, no, raw fish and sushi are not considered safe for pregnant women. This recommendation is consistent across major health organizations like ACOG and the NHS. The primary concern with consuming raw or undercooked fish and shellfish during pregnancy is the risk of foodborne illnesses.

Raw seafood can harbor bacteria such as Listeria monocytogenes, Salmonella, or Vibrio, as well as parasites like anisakis. While these pathogens can cause unpleasant symptoms in anyone, they pose a more significant risk to pregnant individuals because their immune systems are slightly suppressed. In pregnancy, a Listeria infection (listeriosis) can be particularly dangerous, potentially leading to miscarriage, stillbirth, premature birth, or severe illness in the newborn.

This means avoiding:

• Sushi or sashimi made with raw fish.
• Oysters, clams, or mussels that are raw or only lightly steamed.
• Ceviche, which uses citrus juice to "cook" fish rather than heat.
• Smoked salmon that hasn't been cooked (e.g., lox, unless it's canned or shelf-stable).

If you're craving sushi, opt for cooked options like California rolls (with cooked crab or imitation crab), shrimp tempura rolls, or vegetarian sushi. Ensure any cooked seafood in sushi is thoroughly heated. Always confirm that any seafood dish is fully cooked to an internal temperature of 145°F (63°C) before eating.

What seafood should pregnant women avoid?

To minimize exposure to high levels of mercury, pregnant women should avoid certain types of seafood. These fish tend to be larger and live longer, allowing more mercury to accumulate in their tissues over time. The FDA and EPA categorize these as "Choices to Avoid."

The main seafood to avoid during pregnancy includes:

• Swordfish: Known for its very high mercury content.
• Shark: Another large predatory fish with high mercury levels.
• King Mackerel: Distinct from smaller mackerel species, king mackerel contains high levels of mercury.
• Tilefish (from the Gulf of Mexico): This specific variety of tilefish is particularly high in mercury. Tilefish from the Atlantic is generally considered a "Good Choice," but it's often safer to avoid it entirely to prevent confusion.

In addition to these high-mercury fish, pregnant individuals should also avoid any raw or undercooked seafood due to the risk of foodborne illnesses, as discussed previously. This includes raw oysters, clams, mussels, and sushi made with raw fish. While some sources might suggest limiting certain larger tuna species (like bigeye tuna), sticking to the FDA/EPA "Choices to Avoid" list covers the most significant risks.

Is seafood safe in the first, second, or third trimester?

The general guidelines for eating seafood during pregnancy – focusing on low-mercury, fully cooked options – remain consistent throughout all three trimesters and into the breastfeeding period. There isn't a specific trimester where seafood becomes suddenly safe or unsafe; rather, the advice is universal for the entire gestational period.

First Trimester

During the first trimester, your baby's major organs, including the brain and spinal cord, are rapidly developing. Omega-3 fatty acids, particularly DHA, found in many types of seafood, are crucial for this early neurological development. Consuming low-mercury fish during this critical window provides essential building blocks for your baby's healthy start. However, this is also a period of heightened vulnerability, so strict adherence to avoiding high-mercury and raw seafood is especially important to prevent any potential harm from toxins or foodborne illness.

Second Trimester

As you move into your second trimester, your baby continues to grow and mature, with significant development still occurring in the brain and eyes. The nutritional benefits of seafood, including protein, iron, and iodine, continue to be vital for supporting this rapid growth. Maintaining your intake of 2-3 servings of low-mercury, cooked fish per week will support these ongoing developmental processes and help meet your increased nutritional demands.

Third Trimester

The third trimester is a period of rapid fetal weight gain and brain development. Your baby's brain undergoes significant growth during these final months, making omega-3s more important than ever. Continuing to incorporate safe seafood into your diet can contribute to better birth outcomes and support your baby's cognitive development. The same rules apply: stick to low-mercury choices and ensure all seafood is cooked thoroughly to minimize risks.

Breastfeeding

Many of the nutritional benefits of seafood, especially omega-3 fatty acids, can be passed to your baby through breast milk. Continuing to follow the FDA/EPA guidelines for low-mercury, cooked seafood while breastfeeding is highly recommended. This ensures your baby continues to receive these vital nutrients for their ongoing growth and development, without exposing them to harmful levels of mercury. The general recommendation for 8-12 ounces of low-mercury fish per week remains relevant.

What are the risks of eating high-mercury seafood during pregnancy?

The primary risk associated with eating high-mercury seafood during pregnancy is the potential harm from methylmercury exposure. Methylmercury is a neurotoxin that can cross the placenta and accumulate in the developing fetus, where it can have detrimental effects on the nervous system.

The developing brain and nervous system of a fetus are particularly sensitive to methylmercury. High levels of exposure can lead to:

• Developmental delays: Affecting cognitive skills, memory, attention, and language.
• Motor skill impairment: Issues with coordination and fine motor skills.
• Vision and hearing problems: Potentially impacting sensory development.

It's important to understand that these risks are primarily associated with consistent, high-level exposure to methylmercury, which is why health authorities emphasize avoiding the highest-mercury fish and limiting "Good Choice" fish. Occasional, small exposures to mercury from low-mercury fish are not considered harmful; in fact, the benefits of the nutrients in those fish far outweigh the minimal mercury risk.

Symptoms of severe mercury poisoning are rare from dietary intake of fish in most populations, but if they were to occur, they might include numbness or tingling in the extremities, vision problems, and coordination difficulties. The goal of the FDA/EPA guidelines is to prevent any level of exposure that could lead to such issues by guiding pregnant individuals toward safer choices.

What are some healthy seafood alternatives for pregnant women?

If you're not a fan of fish, have dietary restrictions, or simply want to vary your protein and omega-3 sources during pregnancy, there are many excellent alternatives. These options provide crucial nutrients without the concern of mercury or foodborne illness from raw seafood.

• Chicken breast: A lean protein powerhouse, essential for your baby's growth and your energy levels.
• Lean beef: Offers high-quality protein, iron (crucial for preventing anemia), and B vitamins. Ensure it's cooked thoroughly.
• Eggs: An incredibly versatile and complete protein source, also rich in choline, which is vital for fetal brain development.
• Beans and lentils: Excellent plant-based sources of protein, fiber, iron, and folate, supporting healthy digestion and development.
• Tofu: A versatile soy-based protein that's also a good source of calcium and iron, especially helpful for vegetarians.
• Shrimp: (If you're looking for *other* seafood alternatives to high-mercury fish, shrimp is a great low-mercury choice itself!) It's a low-mercury shellfish, rich in protein and selenium.
• Salmon: (Again, if looking for *other* safe seafood options) A top-tier choice for omega-3s, vitamin D, and protein, and a "Best Choice" for pregnancy.
• Cod: A lean, low-mercury white fish, providing protein and B vitamins.
• Sardines: Small, low-mercury fish packed with omega-3s, calcium, and vitamin D.
• Omega-3 Supplements: If you struggle to meet your omega-3 needs through diet, talk to your doctor about a high-quality fish oil or algal oil supplement. Look for supplements that are third-party tested for purity and mercury-free.
• Flaxseeds/Chia Seeds/Walnuts: Plant-based sources of ALA omega-3s, which the body can convert to DHA/EPA, though less efficiently than direct sources.

Remember to discuss any significant dietary changes or supplement plans with your healthcare provider to ensure they align with your specific pregnancy needs.

Related Items — Safety at a Glance

Navigating seafood choices can be tricky, so here's a quick reference for some common fish and shellfish and their general safety during pregnancy, according to FDA/EPA guidelines:

Myth vs. Fact

There's a lot of misinformation swirling around seafood and pregnancy. Let's clear up some common myths.

Myth: All fish should be avoided during pregnancy due to mercury concerns.

Fact: This is incorrect and can lead to missing out on vital nutrients. Health organizations like ACOG and the FDA strongly recommend that pregnant individuals eat 8-12 ounces of low-mercury fish per week. The key is to choose wisely from "Best Choices" and avoid high-mercury varieties.

Myth: Eating fish oil supplements is just as good as eating whole fish.

Fact: While fish oil supplements can provide beneficial omega-3s, whole fish offers a broader spectrum of nutrients, including protein, vitamin D, iodine, and selenium, which supplements typically don't. Whole foods are always preferred when possible, but supplements can be a good alternative if dietary intake is insufficient, after consulting with your doctor.

Myth: If a fish tastes "fishy," it has high mercury.

Fact: The taste or smell of fish has absolutely no relation to its mercury content. Mercury is odorless and tasteless. The mercury content is related to the fish's species, age, size, and position in the food chain, not its flavor profile. A "fishy" taste usually indicates the fish isn't as fresh as it could be.

Key Takeaways

• Most seafood is safe and beneficial during pregnancy, providing essential omega-3s, protein, and other nutrients.
• Aim for 8-12 ounces (2-3 servings) of low-mercury fish per week, choosing from "Best Choices" like salmon, shrimp, cod, and tilapia.
• Avoid high-mercury fish such as swordfish, shark, king mackerel, and Gulf of Mexico tilefish.
• Always ensure all seafood is thoroughly cooked to an internal temperature of 145°F (63°C) to prevent foodborne illness.
• Steer clear of all raw or undercooked seafood, including sushi with raw fish, raw oysters, and ceviche.
• Canned light tuna is a "Good Choice" (limit 1 serving/week), while canned albacore tuna should be avoided. Canned salmon is a "Best Choice."
• If you don't eat fish, discuss omega-3 supplements or other protein sources like eggs, beans, and lean meats with your healthcare provider.

Frequently Asked Questions

Is canned tuna safe during pregnancy?

Yes, canned tuna can be safe during pregnancy, but it depends on the type. Canned light tuna (typically skipjack) is considered a "Good Choice" by the FDA/EPA, and you can safely consume one 4-ounce serving per week. However, canned albacore (white) tuna has higher mercury levels and should be avoided during pregnancy.

What fish has the lowest mercury for pregnancy?

Many fish have very low mercury levels and are excellent choices for pregnancy. Some of the lowest mercury options include salmon, shrimp, cod, tilapia, sardines, trout, pollock, and haddock. These "Best Choices" can be enjoyed 2-3 times per week, providing essential nutrients with minimal mercury risk.

Can I eat salmon every day while pregnant?

While salmon is an excellent low-mercury choice rich in omega-3s, eating it every day might exceed the recommended 8-12 ounces per week for "Best Choices" fish. It's best to aim for 2-3 servings per week and vary your protein sources to ensure a balanced intake of nutrients and minimize exposure to any single contaminant.

What seafood should I avoid when pregnant?

You should avoid seafood known for high mercury levels, including swordfish, shark, king mackerel, and tilefish (from the Gulf of Mexico). Additionally, all raw or undercooked seafood, such as sushi with raw fish, raw oysters, and ceviche, should be avoided due to the risk of foodborne illnesses like listeriosis.

Is shrimp safe for pregnant women?

Yes, shrimp is considered very safe for pregnant women and is an excellent choice. It's low in mercury and a good source of protein, iron, and selenium. Shrimp falls into the FDA/EPA's "Best Choices" category, and you can safely consume 2-3 servings (8-12 ounces) per week when thoroughly cooked.

Can pregnant women eat sushi?

Pregnant women should generally avoid sushi made with raw fish due to the risk of foodborne illnesses like listeriosis and parasitic infections. However, cooked sushi options, such as rolls with cooked shrimp, cooked crab, or vegetarian ingredients, are safe to eat, provided they are prepared hygienically.

What are the benefits of eating fish during pregnancy?

Eating fish during pregnancy offers numerous benefits, primarily due to its high content of omega-3 fatty acids (DHA and EPA), which are crucial for the baby's brain and eye development. Fish also provides high-quality protein, vitamin D, iodine, iron, and selenium, all vital for maternal health and fetal growth and development.

How much omega-3 do pregnant women need?

The American College of Obstetricians and Gynecologists (ACOG) recommends that pregnant and lactating women consume at least 200 mg of DHA per day. This can often be met by consuming 2-3 servings of low-mercury, omega-3-rich fish like salmon or sardines per week. If dietary intake is insufficient, an omega-3 supplement (after consulting your doctor) may be recommended.

When to Call Your Doctor

While enjoying safe seafood during pregnancy is generally beneficial, it's always wise to be aware of potential issues. Call your doctor or healthcare provider immediately if you experience any of the following after eating seafood:

• Severe abdominal pain or cramping.
• Persistent nausea, vomiting, or diarrhea.
• Fever (over 100.4°F or 38°C).
• Symptoms that resemble food poisoning, such as headache, muscle aches, and chills.
• Signs of an allergic reaction, such as hives, swelling, or difficulty breathing.
• Any unusual neurological symptoms, such as numbness, tingling, or vision changes (though these are extremely rare from typical fish consumption).

If you have concerns about your seafood intake or potential exposure to high-mercury fish, don't hesitate to reach out to your healthcare provider for personalized advice. This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

References

1. American College of Obstetricians and Gynecologists (ACOG). (2018). Nutrition During Pregnancy. ACOG Practice Bulletin, No. 200.
2. U.S. Food and Drug Administration (FDA) and U.S. Environmental Protection Agency (EPA). (2021). Advice About Eating Fish and Shellfish.
3. National Health Service (NHS). (2023). Foods to avoid in pregnancy.
4. Centers for Disease Control and Prevention (CDC). (2023). Listeriosis (Listeria).
5. Mayo Clinic. (2023). Pregnancy diet: Focus on these essential nutrients.