Can what you eat affect your mental health? For a long time, people were not sure about this. But nowadays we know better: Dietary nutrients are critical for brain structure and function, so they can improve our mental health. Several studies have shown that healthy diets and the necessary nutritional supplements may help reduce the risk, or even stop the progression of psychiatric disorders. For example, taking omega-3 supplements is known to be beneficial for addressing symptoms of depression, bipolar depression and post-traumatic stress disorder. Amino acids are the building blocks for creating proteins from which brain circuitry and brain chemicals are formed. This article highlights seven of the most important nutrients for our brain, and where to find them.