According to a report by the Fukushima child guidance center, the main abusers of 0-year-olds were the biological father (70%) and biological mother (26%) in 2018.
 To survey the prevalence of postpartum depression symptoms and parent-to-infant bonding failure during the postpartum period, we enrolled participants in the prospective birth cohort study of an adjunct study of the Japan Environment and Children's Study in Miyagi. The prevalence of paternal Edinburgh Postnatal Depression Scale (EPDS-J) scores ≥8 was 11% and that of maternal EPDS-J scores ≥9 was 14%. The prevalence of paternal and maternal Mother-Infant Bonding Scale scores ≥5 was 16% and 9%, respectively. This confirmed the importance of perinatal mental health screening and care for fathers and mothers.
 The guidelines for obstetrical practice in Japan 2020 state that "when diagnosing and treating postpartum psychiatric disorders, consultation with a physician with sufficient knowledge and experience in mental disorders is needed, and establishing an ongoing support system that includes medical care and administrative support should be considered. Recommendation Level B." Obstetric follow-up basically ends at the one-month postpartum checkup. Therefore, it is essential that this information be shared and handed over to the psychiatrist and pediatrician, and comprehensive collaboration to follow the parents and the child from the fetal period be established. For this purpose, the understanding and cooperation of psychiatrists are required.
 Author's abstract