The engagement of men is associated with higher levels of antenatal, childbirth, and postnatal care, better infant and mother nutrition, higher rates of exclusive breastfeeding, and a reduction of postpartum depression and violence against women and children. Men’s interactions with their young children contribute to children’s cognitive, social, and emotional development; school readiness; educational achievement; and better mental health. Sharing childcare responsibilities can improve men’s family relationships, happiness, and physical and mental health.