The food that we eat each day has a direct effect on the way we feel. After all, we’ve all heard the old adage “you are what you eat!” Whether it’s a sugar rush or an energy crash, everything we eat is digested and affects our body along the way. This reaction also makes its way up to the brain. This is why diet can actually have a huge effect on mental health. Studies have shown that the gut actually acts as a sort of “second brain” by producing around 95 percent of the total serotonin (the “happiness” neurotransmitter) that our bodies use each day.