can I eat oysters?
Raw oysters should be avoided completely during pregnancy — they're one of the highest-risk foods for foodborne illness. Thoroughly cooked oysters, however, are safe to eat.
why it matters
Oysters filter large volumes of seawater and can concentrate bacteria (like vibrio) and viruses (like norovirus) in their flesh. Eaten raw, they cause more food poisoning than almost any other food, and pregnancy makes you more vulnerable to severe illness and dehydration.
how to have it safely
Cooked oysters — grilled, baked (like oysters Rockefeller), deep-fried or in a well-cooked stew — are safe, as heat destroys the bacteria and viruses of concern.
worth knowing
- The risk applies to all raw shellfish: clams, mussels and scallops served raw are in the same category.
- 'Very fresh' doesn't mean safe — contamination happens in the water, not from spoilage.
- Cook oysters until the shells open and the flesh is hot throughout; discard any that stay closed.
- Both NHS and FDA advise avoiding raw shellfish throughout pregnancy.
common questions
Can I eat cooked oysters while pregnant?
Yes — oysters that are thoroughly cooked (grilled, baked or fried until hot all the way through) are safe. It's only the raw ones that carry significant risk.
What about mussels and clams?
Same rule: fully cooked mussels and clams are safe and nutritious; raw or lightly steamed ones that haven't opened fully should be avoided.
also in fish & seafood
Aligned with guidance from the NHS, FDA and WHO. This is general information, not personal medical advice — check with your midwife or doctor about your own situation. How we write.