Oceans activists are calling for tinned tuna to be banned from hospitals, school canteens, care homes and maternity wards ...

While canned tuna often contains higher sodium levels than fresh fish, both offer several nutrients. First, look for fish ...

but we were surprised to learn that canned tuna has a slight advantage over fresh tuna due to its lower amounts of mercury. Unfortunately, our reliance on fossil fuels has increased the rates of ...

Levels have fallen dramatically in the atmosphere - but remained stable in tuna since 1971. Very old mercury lurks deep in the ocean and wells up into the waters where the tuna swim, experts say.