9 important foods you aren't eating that you should be this summer

Sure, you know one of the best ways to improve your diet is to cut back on red meat and sweets.

But what about the things you can add to your diet for improved health? The items on this list might not be popular yet among Americans, but they're all either good for your health or beneficial for the planet.

Plus, many of them make great additions to a summer meal - either in salads or on the grill.