Implementation of heat warning systems has reduced relative mortality risk in developed countries , unclear trends in low-middle income countries. Multi-sectoral integrated approach beneficial including heat early warning and response systems targeting vulnerable groups . Longer term urban planning and design, including Nature based solutions  to reduce urban heat island effects. Improved basic protection for outdoor work including work rescheduling to cooler times of the day .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report