Seafood is always a good protein choice in a frozen meal. One reason is because it's the best dietary source of the omega-3 fats, which lower your risk for heart disease and possibly bone loss, depression, memory loss and more.
The trick with frozen seafood is to avoid the fried stuff. Those fish sticks you're baking in the oven were deep fried long before they landed in your kitchen, so don't fool yourself into thinking they're low in fat. And don't forget about shellfish --some studies have shown that eating shrimp can actually help to lower your cholesterol -- and it's also low in mercury. Eating fish can help you avoid stroke and high blood pressure as well, so look for frozen meals containing baked fish or boiled shrimp.