TUNA – inexpensive and convenient, tuna ranks as country’s favourite fish; we buy more than 800 million pounds a year, mostly in cans. While it’s healthy promoting food, tuna does contain relatively high levels of mercury. The amount of omega 3-fats in tuna varies greatly, from 0.3g in 3 ounces of fresh yellowfin to 0.8g in canned albacore (white) to 1.4g in fresh bluefin.

Your best choice here is canned tuna. While the process of canning causes the fish to lose some of its heart-healthy fat, canned tuna comes form smaller, younger fish and therefore has less mercury than fresh tuna. White tuna has more omega-3 fats than light tuna, but also slightly higher mercury levels. Buy canned tuna packed in…

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