Child marriage is closely associated with poverty and is likely to increase girls’ vulnerabilities. Child marriage affects both girls and boys, but it affects girls disproportionately. Girls who marry young are often socially isolated and cut-off from family, friends and other support systems. They may face an increased risk of limited opportunities for education and decent work. The practice of child marriage remains pervasive due to factors spread across the socio-ecological spectrum, including structural inequalities and regressive social norms.