Those that can tolerate gluten may benefit from foods with whole grains, like whole grain pasta and bread. Studies have shown that true whole grains (some "whole grain foods" still contain processed ingredients) have several benefits for those with anxiety: Whole grain is rich in magnesium, and magnesium deficiency may lead to anxiety. Whole grain contains tryptophan, which becomes serotonin - a calming neurotransmitter. Whole grains create healthy energy while reducing hunger - both important for anxiety. Whole grain foods can have a powerful effect on anxiety, and contain nutrients that have been stripped out of modern day diets.