From childhood, we are taught that eating well can help us look and feel our physical best. What is often glossed over is the fact that what we eat also has a significant impact on how we feel mentally. Healthy, well-balanced meals can help people think more clearly, become alert, and improve concentration and attention span. On the other hand, unhealthy foods lead to fatigue, impaired decision-making, and a slower reaction time. Processed foods can cause brain inflammation Increased reliance on processed foods high in sugar and flour can lead to inflammation throughout the body, including the brain. And brain inflammation is linked to mood disorders, such as anxiety and depression. Furthermore, many of these processed foods stimulate the dopamine centers in the brain, making us crave more. Healthy gut bacteria help regulate mental processes Researchers have been studying the connection between our gut and brain, which are linked via the vagus nerve. According to the American Psychological Association, gut bacteria produce a range of neurochemicals used by the brain for regulating physiological and mental processes, such as our mood. Around 95% of our mood-stabilizing hormone, serotonin, is produced by gut bacteria, signaling its undisputed role in maintaining our mental health.