What specific advice does the UK’s National Health Service (NHS) sometimes suggest regarding all tuna consumption during pregnancy?

Limiting it, often grouping it with other oily fish

Different international health organizations may approach dietary recommendations with varying degrees of caution. For instance, the advice provided by the UK’s National Health Service (NHS) concerning tuna consumption during pregnancy can sometimes be more conservative than the tiered approach used in the United States. The NHS guidance often involves limiting all tuna intake, frequently categorizing it alongside other oily fish sources. In some instances, this advice leans toward preferring intrinsically lower-mercury options, such as salmon or sardines, over tuna altogether, perhaps suggesting a limit of no more than two to three portions, translating roughly to 140 grams total per week, to ensure maximum peace of mind.