Nutrition influences the brain in a variety of ways. Food has a major influence on brain chemistry and therefore can have a significant impact on emotional and psychological functioning. The role of dietary problems in creating emotional and psychological disturbances can often be underestimated. In addition, binge eating, overeating, restricting patterns, and food addictions all have important clinical implications on a patient’s well-being. Working with a clinical nutritionist as part of a comprehensive psychiatric treatment plan can significantly improve patient outcomes for many mental health conditions.