MELBOURNE, Australia—Consuming a diet rich in produce, whole grains and high-quality protein may reduce the risk of depression and anxiety in women, according to a trial out of the University of Melbourne (Am J Psychiatry 2010;167:305-11. DOI: 10.1176/appi.ajp.2009.09060881). Researchers examined the prevalence of mental disorders in women ages 20 to 93, and whether incidence was related to habitual diet, using a food frequency questionnaire.
After adjustments for age, socioeconomic status, education and health behaviors, a “traditional” dietary pattern characterized by fruits, vegetables, meat, fish and whole grains was associated with lower odds for major depression or dysthymia and for anxiety disorders. A “Western” diet including processed or fried foods, refined grains, sugary products and beer was associated with a higher incidence of anxiety and depression.
The researchers concluded there appears to be an association between habitual diet quality and incidence of mental disorders, although confounding and reverse causality were not ruled out.