“…Three studies had examined anxiety (33)(34)(35), 2 depression (33,36), and seven violence (27,28,32,36,41), and their results revealed the high incidence of preterm birth in those with anxiety, depression, and violence compared to those without these determinants. Some of the studies discussed the adverse effects of psychosocial factors such as stress during pregnancy, childbirth, and breastfeeding on pregnancy outcomes such as miscarriage, nausea and vomiting, preeclampsia, weight loss, preterm birth, low birth weight, immunosuppression, and the subsequent increase in episiotomy and neonatal infections and some degree of postpartum mental disorder (21,47). In one study, Rondo et al found a direct relationship between maternal psychosocial stress or distress and low birth weight, preterm birth, and intrauterine growth retardation (48).…”