The longitudinal association between onion consumption and risk of depressive symptoms: results from the TCLSIH Cohort study and the UK Biobank

Consuming onions consistently may help shield individuals against depression.

This study determined the nexus between dietary ingestion of onions and an individual's propensity to suffer from depression. Researchers utilized a combination of validated food frequency questionnaires and self-rating depression scale to assess the onion intake levels and prevalence of depression among over 250,000 men and women. 

Researchers identified a downward trend in depression incidence with increase in the frequency of consumption of onions. Evidence from this study showed that habitual eating of onions may help ward off depression.