And, while we are on the subject, fresh vegetables (carrots, spinach, cucumbers), apples, sour cherries, plums, pineapples, and fresh berries are also associated with better mental health and decreasing symptoms of depression.
Outside of fruits and veggies are fish, whole grains, eggs, healthy fats (e.g., olive oil).
You've heard of how sleepy you might feel after that sumptuous Thanksgiving meal. Not that turkey is all that you would be consuming that evening, but it's the Tryptophan in that turkey that makes you feel sluggish and tired. And, about Tryptophan...that boosts serotonin too.
Although I concentrated on foods reducing anxiety and depression, these foods are ALL healthy and a source of protein. And when it comes down to it, they are lower in calories, keeps you trimmer, and loaded with vitamins, fiber and minerals.
The moral to this: eat healthfully. You'll look better, feel better, and be all around...BETTER!