The aim of this report is to provide an overview of needs and gaps to strengthen psychosocial well-being during the first 1000 days of life. It identifies current needs for psychosocial support and promotes the systematic use of effective, evidence-based interventions for expectant parents, children under two years of age and their families across the Nordic region. The report synthesises literature, intervention reviews and expert insights to inform future implementation strategies in the Nordic countries. This report is part of the ongoing work of the Nordic Network about the child’s first 1000 days – a healthy start in life, which builds upon the earlier The First 1000 Days in the Nordic Countries project 2019–2022.