Few studies have assessed potential SRM impacts on human health and well-being. SAI using sulphate aerosols is projected to deplete the ozone layer, increasing mortality from skin cancer, and SAI could increase particulate matter due to offsetting warming, reduced precipitation and deposition of SAI aerosols, which would increase mortality, but SAI also reduces surface-level ozone exposure, which would reduce mortality from air pollution, with net changes in mortality uncertain and depending on aerosol type and deployment scenario . However, these effects may be small compared with changes in risk from infectious disease  or food security due to SRM influences on climate . Using volcanic eruptions as a natural analogue, a sudden implementation of SAI that forced the El Niño-Southern Oscillation  system may increase risk of severe cholera outbreaks in Bengal . Considering only mean annual temperature and precipitation, SAI that stabilises global temperature at its present-day level is projected to reduce income inequality between countries compared with the highest warming pathway  . Some integrated assessment model scenarios have included SAI  showing the indirect costs and benefits to welfare dominate, since the direct economic cost of SAI itself is expected to be relatively low . There is a general lack of research on the wide scope of potential risk or risk
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report