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Empirical evidence of mental health risks posed by climate change

Nick Obradovich, Robyn Migliorini, Martin P. Paulus, and Iyad Rahwan
PNAS October 23, 2018 115 (43) 10953-10958; published ahead of print October 8, 2018 https://doi.org/10.1073/pnas.1801528115
Nick Obradovich
aMedia Lab, Massachusetts Institute of Technology, Cambridge, MA 02139;bBelfer Center for Science and International Affairs, Harvard University, Cambridge, MA 02138;
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  • ORCID record for Nick Obradovich
  • For correspondence: nobradovich@gmail.com
Robyn Migliorini
cPsychology Department, Edith Nourse Rogers Memorial Veterans Hospital, Bedford, MA 01730;
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Martin P. Paulus
dLaureate Institute for Brain Research, Tulsa, OK 74136;ePsychiatry Department, University of California, San Diego, La Jolla, CA 92093;
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Iyad Rahwan
aMedia Lab, Massachusetts Institute of Technology, Cambridge, MA 02139;fInstitute for Data, Systems, and Society, Massachusetts Institute of Technology, Cambridge, MA 02139
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  1. Edited by B. L. Turner, Arizona State University, Tempe, AZ, and approved August 21, 2018 (received for review January 26, 2018)

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Significance

Wellbeing falters without sound mental health. Scholars have recently indicated that the impacts of climate change are likely to undermine mental health through a variety of direct and indirect mechanisms. Using daily meteorological data coupled with information from nearly 2 million randomly sampled US residents across a decade of data collection, we find that experience with hotter temperatures and added precipitation each worsen mental health, that multiyear warming associates with an increased prevalence of mental health issues, and that exposure to tropical cyclones, likely to increase in frequency and intensity in the future, is linked to worsened mental health. These results provide added large-scale evidence to the growing literature linking climate change and mental health.

Abstract

Sound mental health—a critical facet of human wellbeing—has the potential to be undermined by climate change. Few large-scale studies have empirically examined this hypothesis. Here, we show that short-term exposure to more extreme weather, multiyear warming, and tropical cyclone exposure each associate with worsened mental health. To do so, we couple meteorological and climatic data with reported mental health difficulties drawn from nearly 2 million randomly sampled US residents between 2002 and 2012. We find that shifting from monthly temperatures between 25 °C and 30 °C to >30 °C increases the probability of mental health difficulties by 0.5% points, that 1°C of 5-year warming associates with a 2% point increase in the prevalence of mental health issues, and that exposure to Hurricane Katrina associates with a 4% point increase in this metric. Our analyses provide added quantitative support for the conclusion that environmental stressors produced by climate change pose threats to human mental health.

  • climate
  • mental health
  • natural disasters
  • psychology
  • weather

Footnotes

  • ↵1To whom correspondence should be addressed. Email: nobradovich{at}gmail.com.
  • Author contributions: N.O. and R.M. conceived of the research; N.O. designed research; N.O. performed research; N.O. analyzed data; and N.O., R.M., M.P.P., and I.R. wrote the paper.

  • The authors declare no conflict of interest.

  • This article is a PNAS Direct Submission.

  • Data deposition: The study materials are available on Harvard’s Dataverse: https://doi.org/10.7910/DVN/OVQY76.

  • This article contains supporting information online at www.pnas.org/lookup/suppl/doi:10.1073/pnas.1801528115/-/DCSupplemental.

Published under the PNAS license.

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Empirical evidence of mental health risks posed by climate change
Nick Obradovich, Robyn Migliorini, Martin P. Paulus, Iyad Rahwan
Proceedings of the National Academy of Sciences Oct 2018, 115 (43) 10953-10958; DOI: 10.1073/pnas.1801528115

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Empirical evidence of mental health risks posed by climate change
Nick Obradovich, Robyn Migliorini, Martin P. Paulus, Iyad Rahwan
Proceedings of the National Academy of Sciences Oct 2018, 115 (43) 10953-10958; DOI: 10.1073/pnas.1801528115
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