Can you eat shark while pregnant?
Not advisedNo, skip shark entirely during pregnancy. It tops the FDA's list of fish to avoid and the NHS bans it outright: large predators concentrate mercury at levels that can affect a baby's developing brain.
Why
Shark sits at the apex of ocean food chains and lives for decades, which makes it a mercury accumulator: methylmercury from every fish it ever ate is stored in its flesh, at concentrations many times those in small fish. Methylmercury crosses the placenta and targets exactly what pregnancy is building, the nervous system. This is why shark appears on both the FDA's Choices to Avoid and the NHS's explicit do-not-eat list for pregnancy, alongside swordfish and marlin. Note for travelers and Australians: flake in fish and chips shops is shark, same rule.
By trimester
Avoid at every stage, and ideally while trying to conceive: mercury clears from the body slowly, over months, so the avoidance list works best started early.
Safer alternatives
- Salmon, trout or cod, all Best Choices
- Mahi mahi when you want a meaty grill fish, within one serving a week
- Shrimp, scallops and other low-mercury shellfish, cooked
Sources
- FDA https://www.fda.gov/food/consumers/advice-about-eating-fish
- NHS https://www.nhs.uk/pregnancy/keeping-well/foods-to-avoid/
Every verdict follows our sourcing methodology: official health guidelines only, most cautious position when they differ.
Frequently asked questions
I ate shark before I knew I was pregnant. How bad is it?
One meal is a small contribution to a body burden that builds over months; do not panic. Simply stop now, keep the rest of your fish low-mercury, and mention it to your provider if it worries you. The advice exists to prevent repeated exposure.
What exactly does mercury do to a developing baby?
Methylmercury interferes with the developing brain and nervous system; documented effects from high exposures include impacts on cognition, memory and motor skills. Dose matters, which is why the rule is avoiding the highest-mercury species while still eating low-mercury fish for their benefits.
Which other fish share shark's avoid status?
Swordfish, marlin, king mackerel, tilefish from the Gulf of Mexico, orange roughy and bigeye tuna complete the FDA's avoid list for pregnancy. Everything else on the chart is a Best or Good choice with serving guidance.
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