Most days I consume around 3 cans of tuna a day. I stick to the chunk light because it doesnt have nearly the amount of mercury that Albacore does. Albacore has 3x the amount of mercury that chunk light does. Some days i eat 4 cans. Simply because its good quality protein, easy and fast to eat, and its dirt cheap at costco. So is 3 to 4 cans too much?