 Consuming foods containing serotonin has been suggested to aid in the treatment of NES, but other research indicates that diet by itself cannot appreciably raise serotonin levels in the brain.A few foods (for example, bananas) contain serotonin, but they do not affect brain serotonin levels, and various foods contain tryptophan, but the extent to which they affect brain serotonin levels must be further explored scientifically before conclusions can be drawn, and "the idea, common in popular culture, that a high-protein food such as turkey will raise brain tryptophan and serotonin is, unfortunately, false.