I generally eat about 4 cans of chunk light tuna a week. Reasoning: Omega-3's are good and mercury is low in chunk light tuna.
However, I just read an article saying that mercury was high even in canned tuna, although previous sources have said that mercury levels in canned tuna are low enough to be safe.
The same sources state that only the larger predatory fish such as shark and albacore tuna need be avoided.
What's your take?
-- Corey Clark
Chunk light tuna contains approximately one third of the mercury found in the same amount of albacore ("white") tuna.
According to current recommendations, adults can safely eat up to three cans of chunk light tuna a week (the suggestion for albacore tuna caps off weekly consumption at one can for adults).
Don't get too comfortable, though. You still need to glance at the ingredient list since some varieties of canned light tuna contain yellowfin tuna, which contains higher amounts of mercury.