Eating fish while pregnant

As soon as you announce you're expecting, the 'pregnancy police' seem to watch your every mouthful. While there are some well-founded dietary guidelines, the issues concerning eating fish are quite confusing.

Some types of fish (swordfish, marlin, shark) should be avoided, as they contain high levels of mercury, which has been linked to premature birth and reduced intelligence. Tuna may also contain mercury, so have no more than two portions a week. It's also advisable to limit your intake of oily fish (mackerel, trout, sardines, salmon).

But according to various studies, omega-3 fats in oily fish boost your baby's birth weight, intelligence, motor skills and social behaviour. So who should you believe? The majority of UK research suggests the benefits of eating fish (within the recommended guidelines) far outweigh the risk from the levels of mercury. But there are other good sources of omega-3, too, such as linseed.
Dr Lowri Kew

By Dr Lowri Kew