DHA contents of mothers’ milk and prevalence rates of postpartum depression. Postpartum prevalence rates for Australia, Sweden, the United Kingdom, The United States were derived by meta-analysis. All other countries are represented by a single study, see text. DHA content of mother’s milk is expressed as the weight percent of docosahexaenoic acid of mature milk. A simple Pearson’s product moment correlation was used for regression analysis (r5 20.84, p,0.0001).This Figure is from J.R. Hibbeln, 

 Journal of Affective Disorders 69(2002) 15-29.