Can I eat fish and shellfish while pregnant?
Generally speaking fish is good for you and helps your baby's development, so do include it in your pregnancy diet. However, there are some varieties of fish and seafood you need to avoid.
Any fish which contains high levels of mercury – marlin, swordfish and shark – are a bad idea, as mercury can affect your baby's developing nervous system. Limit your consumption of oily fish (such as mackerel, salmon and sardines) to no more than two portions per week.
You should also limit tuna to no more than four cans (around 140g each when drained) or two fresh tuna steaks (around 140g cooked or 170g raw each) per week.
White fish is fine to eat during pregnancy. Cooked shellfish is also safe, but if you're buying ready-to-eat cooked prawns or other shellfish to eat cold, it's safest to reheat them until they're steaming hot before eating.
Food Standards Agency guidance advises pregnant women to avoid eating cold-smoked or cured fish (including smoked salmon, gravadlax and cold-smoked trout) unless it has been cooked until steaming hot because of the risk of listeriosis.
If you're eating sushi, avoid sushi made with raw fish or raw shellfish. Sushi made with cooked fish or vegetables is fine.
Listeriosis infection can cause stillbirth or miscarriage in pregnancy, and sepsis or meningitis in newborn babies.
Caffeine and alcohol