The Lancet Countdown on Health and Climate Change is an academic collaboration of 200+ global experts, who annually update a series of 40+ peer-reviewed indicators to monitor the impact of climate change on health, and identify the health opportunities of climate action. Since 2016, these indicators have provided regular, reliable global and regional stocktakes on climate change and health. This document summarises key findings from the 2023 Report of the Lancet Countdown* for Bangladesh