In this recently published article, an inverse association between diet quality and depressive symptoms in middle-aged female university student sample

Elevated depressive symptoms were associated with consumption of diets of poor nutritional quality. It has been concluded that healthy eating can contribute to lower levels of depression

Quehl, Rachel, et al. “Food and Mood: Diet Quality is Inversely Associated with Depressive Symptoms in Female University Students.” Canadian Journal of Dietetic Practice and Research78 (2017): 1-5.