Human behaviours and systems will be disrupted by climate change in a myriad of ways, and the potential consequences for mental health and well-being are correspondingly large in number and complex in mechanism . For example, climate change may alter human physical activity and mobility patterns, in turn producing alterations in the mental health statuses promoted by regular physical activity . Climate change may affect labour capacity, because heat can compromise the ability to engage in manual labour as well as cognitive functioning, with impacts on the economic status of individual households as well as societies . Migrations and displacement caused by climate change may worsen the well-being of those affected . Climate change is expected to increase aggression through both direct and indirect mechanisms, with one study predicting a 6% increase in homicides globally for a 1℃ temperature increase, although noting significant variability across countries . Broad societal outcomes such as economic unrest, political conflict or governmental dysfunction assessed in Section 7.3.5 may undermine the mental health of populations in the future . Food insecurity presents its own severe risks for mental health and cognitive function .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report