Child marriage is defined as any formal marriage or informal union where one or both parties are under 18 years of age. An estimated 15 million girls globally marry each year before age 18. Religious, cultural, and financial reasons are cited to explain the practice of child marriage. Consequences for child brides can include physical and mental health risks, as well as lack of educational and economic opportunities. Initiatives to prevent child marriage focus on empowering girls through education, community engagement, and advocacy campaigns.