Is sushi healthy?

( CNN) Whether you eat sushi from a Japanese restaurant or from a local supermarket, there’s no arguing that it’s become a mainstream meal — and that’s good news.

Sushi can be a very healthy addition to your diet, especially when it’s filled with vegetables, omega-3-rich seafood such as salmon and tuna, and small amounts of heart-healthy avocado.

The healthfulness of sushi can rapidly decline, though, depending on how your roll is prepared. Sushi saboteurs include tempura batter and seasonings such as mayo and cream cheese, which significantly boost unhealthy fat and calories.