Pregnancy is a unique state of physiological stress, which necessitates physical, mental and social adaptation. Animal experiments and human studies have shown that prenatal maternal stress is associated with increased risk for spontaneous abortion, preterm labor, fetal malformations, and asymmetric growth retardation. Evidence of long-term functional disorders in the offspring after prenatal exposure to stress is limited. But retrospective studies and two prospective studies support such effects on the behavioral development with attentional deficits, hyper anxiety and disturbed social behavior .