Climate change is increasing vector-borne and water-borne diseases, undernutrition, mental disorders and allergy-related illnesses in Asia by increasing hazards such as heatwaves, flooding and drought, and air pollutants, in combination with more exposure and vulnerability . Sub-regional diversity in socioeconomic and demographic contexts  and geographic characteristics largely define the differential vulnerabilities and impacts within countries in Asia. Under the medium-to-high emissions scenario, rising temperatures and extreme climate events will have an increasing impact on human health and well-being with varying types and magnitudes of impact across Asia . More frequent hot days and intense heatwaves will increase heat-related deaths. Increased floods and droughts will have adverse impacts on food availability and the prices of food, resulting in increased undernourishment in South and Southeast Asia. Increases in heavy rain and temperature will increase the risk of diarrhoeal diseases, dengue fever and malaria in tropical and subtropical Asia. 
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report