Better mood
Like the study I referenced above, another from New Zealand has tied a higher produce intake to mood. In the study, nearly 300 young adults completed daily food diaries for three consecutive weeks, along with psychological and mood-related ratings. Scientists found that a higher intake of fruits and veggies resulted in more energy, calm, and greater feelings of overall happiness. They also noted that the effects were seen not only on the days more produce was consumed, but also throughout the following day.
Another study, published in the journal Social Indicators Research, which tracked the eating habits of 80,000 adults, found that downing more servings of fruits and veggies boosted mental well being, with the magic number for happiness being seven daily servings (think half of each meal).