It's common knowledge that fruits and vegetables are vital parts of a nutritious diet. Recent research shows strong evidence that eating fruits and veggies provides even more positive benefits than just for your physical health. Reported in July 2016, researchers at the University of Warwick found evidence that eating fruits and vegetables is associated with a substantial increase in happiness levels. In the study, happiness increased for each extra daily portion of fruit and vegetables up to eight portions per day. This was one of the first major scientific attempts to look at the link between eating fruits and vegetables and positive psychological effects. Some researchers believe there is a link between optimism and blood levels of carotenoid, which is present in many fruits and vegetables, although more research is needed. We've collected some awesome videos on this topic. Watch them now to learn more.