I wouldn’t touch canned tuna with a ten foot pole. Also, canned or fresh tuna is high in mercury, so one shouldn’t consume too much of it, certainly not more than a few times a week, probably less. A great alternative would be grass fed American bison (buffalo). If you must eat tuna, eating it fresh will help. It tastes best as close to raw as you are willing to eat it. If you must eat canned tuna, try Tuna Helper (I assume they still make it), as a child there were a few of those that I could be persuaded to eat, and no one hates the taste and smell of canned tuna more than I.