What is the general recommendation for pregnant or breastfeeding women regarding oily fish consumption?

They should stick to low-mercury options like salmon or sardines and consume no more than two portions per week.

For populations with specific vulnerability, such as pregnant or breastfeeding women, dietary guidelines must balance the crucial need for omega-3s in fetal development against the risks associated with mercury exposure. While omega-3s are necessary, specific limitations are imposed. The guidance advises these groups to selectively choose fish known to be lower in mercury, naming salmon and sardines as examples. Crucially, the total recommended intake frequency is restricted; they should limit their consumption to a maximum of two portions weekly, a tighter restriction than the general population guidelines to ensure safety while still capturing necessary nutrients.