For most of us, nothing works better than food when you feel low. Now, there is a growing body of scientific research to explain the link. According to these studies, what you eat influences your gut bacteria which play a significant role in the secretion of serotonin, a brain chemical responsible for happiness, anxiety and overall mood. As we celebrate International Day of Happiness today, we will take a look at some foods that make us happy. When talking about mood-boosting fare, one thing is a sure-shot no-no: High-sugar foods which give you an instant rush and uplift your mood. However, this is a short-term impact. In the long run, they do more harm than good. The health impacts of such foods can be many, starting from making you obese to increasing your chance of diabetes. On this International Day of Happiness, here is a list of healthy foods that not only uplift your mood but also come with quite a few health benefits.