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. 2023 Apr 18;20(8):5563.
doi: 10.3390/ijerph20085563.

Investigating the Health Impacts of Climate Change among People with Pre-Existing Mental Health Problems: A Scoping Review

Lisa Woodland  1   2 , Priyanjali Ratwatte  3   4 , Revati Phalkey  3 , Emma L Gillingham  3
Affiliations

Investigating the Health Impacts of Climate Change among People with Pre-Existing Mental Health Problems: A Scoping Review

Lisa Woodland et al. Int J Environ Res Public Health. .

Abstract

Climate change is the greatest threat to global public health, although the impacts on mental health are relatively understudied. Furthermore, there is a lack of consensus about the effects of climate change on individuals with pre-existing mental health problems. This review aimed to identify the health impacts of climate change on people with pre-existing mental health problems. The search was conducted across three databases; studies were included if they involved participants who had mental health problem(s) before a climate-driven event and reported on health outcomes post-event. A total of thirty-one studies met the full inclusion criteria. The study characteristics included 6 climate-driven events: heat events, floods, wildfires, wildfire and flood, hurricanes, and droughts, and 16 categories of pre-existing mental health problems, with depression, and non-specified mental health problems being the most common. The majority of the studies (90%, n = 28) suggest an association between the presence of pre-existing mental health problems and the likelihood of adverse health impacts (e.g., increased mortality risk, new symptom presentation, and an exacerbation of symptoms). To mitigate the exacerbation of health inequalities, people with pre-existing mental health problems should be included in adaption guidance and/or plans that mitigate the health impacts of climate change, future policy, reports, and frameworks.

Keywords: anxiety; dementia; depression; drought; extreme heat; flood; hurricane; post-traumatic stress; schizophrenia; wildfire.

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Conflict of interest statement

The authors declare that there is no conflict of interest. The funders had no role in study design, data collection, data analysis, data interpretation, or writing of the manuscript. The corresponding author had full access to all the data and had final responsibility for the decision to submit for publication.

Figures

Figure 1
Figure 1
PRISMA 2020 flow diagram of studies included in the review to investigate the mental health impacts of climate-driven events among people with pre-existing mental health problems [28].
See this image and copyright information in PMC

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