This is, unfortunately, complex—the levels of mercury in fish depend on the kind of fish and where it was caught. So a study of, say, tuna in Tsukiji (Tokyo’s fish market) will tell you nothing about the mercury content of your sardines and vice versa. You can estimate averages, but the error bars are going to be pretty big.
This is, unfortunately, complex—the levels of mercury in fish depend on the kind of fish and where it was caught. So a study of, say, tuna in Tsukiji (Tokyo’s fish market) will tell you nothing about the mercury content of your sardines and vice versa. You can estimate averages, but the error bars are going to be pretty big.