Can You Eat Swordfish When Pregnant?
Written by Jordan Morley · Reviewed against NHS foods-to-avoid guidance · Last updated 28 October 2026
No — the NHS says to avoid Swordfish completely during pregnancy because it contains high levels of mercury.
Why is swordfish a concern in pregnancy?
Swordfish is a large, long-lived predatory fish and contains more mercury than most other fish. Too much mercury can affect the development of your baby's nervous system, which is why the NHS advises avoiding Swordfish entirely while pregnant or trying for a baby.
You can also check the calorie content of swordfish alongside its safety information. Also check medication safety during pregnancy if you're managing any conditions.
The exception
Swordfish isn't a typical sushi fish, but it does occasionally appear (e.g. as a specialty or seared nigiri) — if it's on the menu, skip it regardless of how it's prepared; freezing or cooking doesn't remove mercury. See our sushi safety guide for the fish that are fine instead.
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Check Price →Swordfish: the other answers on this site
| Question | Short answer (links to the full page) |
|---|---|
| While breastfeeding | Limit — max 1 portion a week |
Common questions
Can I eat swordfish in the first trimester?
Yes — the advice to avoid Swordfish applies to all of pregnancy, and mercury exposure in the first trimester is particularly worth avoiding as the nervous system is forming.
Is a small amount of swordfish OK during pregnancy?
The NHS advises avoiding Swordfish altogether during pregnancy rather than limiting it.
I accidentally ate swordfish while pregnant — what should I do?
A single portion is very unlikely to cause any harm — the concern is repeated exposure over time. Simply avoid it for the rest of your pregnancy and mention it to your midwife if you're worried.
Is cooked swordfish safe in pregnancy?
Cooking does not remove mercury, so Swordfish should be avoided during pregnancy whether cooked or not.
Related answers
Primary source: NHS foods-to-avoid guidance.
General information only, not medical advice: see the medical disclaimer. Feeling unwell after eating something? Contact NHS 111 or your GP.