malaria, diarrhoea and heat stress will be approximately 250,000 deaths per year in 2030-2050 under the medium-to-high emissions scenario, assuming no adaptation . The impacts are expected to be greatest in South, East and Southeast Asia. Another projection showed that the change in heat-related deaths is largest in Southeast Asia, which was a 12.7% increase at the end of the century under a high-emissions scenario . As the proportion of older individuals in the population rises, the number of years lost due to disability increases more steeply . In the 2080s, the number of annual temperature-related deaths is estimated to reach twice that in the 1980s in China . Over a 20-year period in the mid-21st century , the incidence of excess heat- related mortality in 51 cities in China is estimated to reach 37,800  deaths per year under RCP8.5 .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report