Research shows that there is a strong relationship between the brain and the gut. In fact, there is a very clear interaction between the two, considering that there is a nerve (the vagus nerve) connecting the gut and the brain. Through the nerve, the brain can dictate the type of bacteria that needs to be in the gut at a given time and on the other hand, the gut can alter the brain’s emotional behaviour.
Without a healthy meal plan (processed foods), your gut will always experience discomfort, especially due to altered bacterial activity and this can be extended to your brain leading to conditions such as depression. Eliminating foods with a high amount of sugars and flour can promote the growth of healthy bacteria in the gut, an effect that will improve your mental health in the long run.