King, sockeye, and coho salmon have more DHA plus EPA omega-3 fatty acids than almost any other seafood, as well as some of the lowest mercury levels. Nutritionally, wild-caught Alaskan canned salmon is as good as fresh, and it costs a fraction as much. The Monterey Bay Aquarium also champions this fish's sustainability.
The same key nutrients that give high-priced health foods their disease-fighting powers can be found in more common fruits and veggies. Here's where to look.