A commentary on the carbon footprint of milk formula: harms to planetary health and policy implications.

Formula feeding is a maladaptive practice in the face of contemporary global environmental and population health challenges. Breastfeeding protection, support and promotion helps to safeguard planetary and human health by minimising environmental harm. It is a beneficial response to concerns about disease burdens and climate change. Breastfeeding populations are more resilient in emergencies. Effective and cost-effective policies and interventions exist for increasing breastfeeding and reducing unnecessary use of formula. Implementing such measures presents a rare opportunity to both reduce the greenhouse gas problem and improve human nutrition, health, and health equity.