Despite increasing evidence about the value and importance of breastfeeding, less than half of the world's infants and young children (aged 0–36 months) are breastfed as recommended. This Series paper examines the social, political, and economic reasons for this problem.

Microbiological quality is one of the key safety standards in human milk bank operations.

This analysis documents the financial costs and budgetary needs for implementing mass media components of large-scale breastfeeding programs, providing annual costs, cost structures, and coverage achieved through mass media interventions in four low- and middle-income countries.

This study examined implementation of the Code of Marketing of Breast-Milk Substitutes (the Code) in Vietnam with a focus on marketing practices by the baby food industry and perceptions of caregivers, health workers, and policy makers.

In the Philippines, workers in the informal economy are not guaranteed paid maternity leave. A non‐contributory maternity cash transfer to informal sector workers could improve social equity, economic productivity, and public health and nutrition through supporting breastfeeding.

This study evaluates the sustainability of activities introduced during A&T implementation (2009–2014) in Bangladesh and Vietnam, revealing that multiple activities, such as mass media campaigns, policy and advocacy activities, and social mobilization activities were integral to the program’s