Here are some well-respected sources of information on this topic:
CDC: https://www.cdc.gov/climateandhealth/effects/default.htm
CH Chan School of Public Health at Harvard: https://www.hsph.harvard.edu/c-change/issues/climate-md/
Yale School of Public Health: https://ysph.yale.edu/research_practice/interdepartmental/climate/
American Public Health Association: https://www.apha.org/topics-and-issues/climate-change
EPA Human Health and Climate Change Research https://www.epa.gov/climate-research/human-health-and-climate-change-research