When it comes to lunch, tuna fish offers it all. It's high in protein and flavor, and it's economical too! But more and more people are concerned about tuna due to questions about sustainability — specifically issues of overfishing and damage to ocean ecology. There are also questions about high levels of mercury.
And yet I do love my tuna fish sandwiches! So I went to an expert with this question: should I feel guilty buying and eating canned tuna?