Amid a lawsuit that raises questions about what Subway’s tuna fish is made of, The New York Times said it submitted samples from three Los Angeles locations of the sandwich chain to have the fish ...

Fresh and canned tuna both provide protein and omega-3s. But some types may offer more of these nutrients. They can also differ in mercury levels.

Fact checked by Nick Blackmer Salmon tends to be higher in omega-3s, which are great for heart health.Tuna is also a good ...