The Baby Friendly Hospital Initiative is effective in promoting certain health outcomes in infants from Belarus. Whether those findings are applicable to United States primary care is unclear. Indirect evidence suggests that interventions with a component of lay support (e.g., peer support or peer counseling) are more effective than interventions with structured education or professional support in increasing both short- and long-term breastfeeding rate, compared to usual care. Prenatal combined with postnatal interventions are more effective than usual care in prolonging the duration of breastfeeding.