This chapter addresses mental health in young men and boys, highlighting its under-recognition in policy and practice despite poor mental health outcomes and high suicide rates. It considers how hegemonic and precarious masculinity create emotional strain which deters help seeking. Traditional norms reinforce repression during adolescence, a critical stage marked by hormonal changes, identity formation and social pressures, intensifying mental health challenges. Issues often manifest as aggression or withdrawal, leading to missed interventions. Intersectional factors are overlooked, underscoring the need for contextual, co-designed approaches. The chapter concludes by acknowledging the profound impact that external expectations of masculinity have upon well-being.