Eating fish during pregnancy could cut a woman's odds of developing post-natal depression.
Research suggests that omega-3 fatty acids, which are particularly abundant in oily fish such as salmon, protect against the baby blues. Stocks built up during pregnancy appear to give a woman's mental health a boost months later.
Post-natal depression affects up to 13 per cent of new mothers – and lasts more than a year in severe cases, even with counselling and medication. However, too much oily fish in pregnancy can be bad for the baby’s development, so experts say it is important that mothers-to-be strike a balance when trying to boost their levels of omega-3.