{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T10:17:18Z","timestamp":1785406638560,"version":"3.56.0"},"reference-count":58,"publisher":"Cambridge University Press (CUP)","license":[{"start":{"date-parts":[[2026,7,7]],"date-time":"2026-07-07T00:00:00Z","timestamp":1783382400000},"content-version":"unspecified","delay-in-days":187,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0"}],"funder":[{"DOI":"10.13039\/100004440","name":"Wellcome","doi-asserted-by":"publisher","award":["228033\/Z\/23\/Z"],"award-info":[{"award-number":["228033\/Z\/23\/Z"]}],"id":[{"id":"10.13039\/100004440","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["cambridge.org"],"crossmark-restriction":true},"short-container-title":["Psychol. Med."],"published-print":{"date-parts":[[2026]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec id=\"S0033291726105169_sec1\">\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Extreme hot weather poses increasing risks to mental health. Yet, factors affecting vulnerability are under-researched. This mixed-method study integrates a systematic review and qualitative investigation to identify risk and protective factors for heat-related mental health issues, leading to the co-development of a screening tool. This could inform future research and, pending validation in clinical settings, support mental health professionals in assessing vulnerability among service users.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"S0033291726105169_sec2\" sec-type=\"methods\">\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>We searched PubMed and Web of Science for publications on extreme heat, mental health, and risk\/protective factors. In addition, we conducted six focus groups with 21 people with lived experience of heat and\/or mental illness and 12 healthcare professionals. Transcripts were analyzed using thematic content analysis and informed the co-development of the screening tool.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"S0033291726105169_sec3\" sec-type=\"results\">\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Out of 764 articles identified by the systematic review, 47 were included. Evidence emerged for age, sex, existing mental illness, ethnicity, and socioeconomic status as risk factors. However, findings were inconsistent between studies, likely due to differences in study population and methodology. Protective effects included good physical health, social support, and exposure to green spaces. Our qualitative investigation identified additional risk and protective factors related to: (1) behavioral adaptability, (2) personal heat sensitivity, and (3) disparities in heat exposure. The resulting screening tool, HEAT-MH (Heat Exposure Assessment Tool for Mental Health), contains 15 questions on previous experiences of heat, general health, and lifestyle.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"S0033291726105169_sec4\" sec-type=\"conclusions\">\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>The mental health impacts of extreme heat depend on a range of risk and protective factors, including demographic, socioeconomic, health, and lifestyle characteristics.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1017\/s0033291726105169","type":"journal-article","created":{"date-parts":[[2026,7,7]],"date-time":"2026-07-07T07:11:30Z","timestamp":1783408290000},"update-policy":"https:\/\/doi.org\/10.1017\/policypage","source":"Crossref","is-referenced-by-count":0,"title":["Extreme heat and mental health: systematic review and qualitative investigation of risk and protective factors"],"prefix":"10.1017","volume":"56","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6218-0292","authenticated-orcid":false,"given":"Lea","family":"Baecker","sequence":"first","affiliation":[{"id":[{"id":"https:\/\/ror.org\/0220mzb33","id-type":"ROR","asserted-by":"publisher"}],"name":"Institute of Psychiatry, Psychology & Neuroscience, King\u2019s College London"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0009-7367-9791","authenticated-orcid":false,"given":"Maisie","family":"Khan","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/0220mzb33","id-type":"ROR","asserted-by":"publisher"}],"name":"Institute of Psychiatry, Psychology & Neuroscience, King\u2019s College London"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Udita","family":"Iyengar","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/0220mzb33","id-type":"ROR","asserted-by":"publisher"}],"name":"Institute of Psychiatry, Psychology & Neuroscience, King\u2019s College London"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alaleh","family":"Tadayon","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/0220mzb33","id-type":"ROR","asserted-by":"publisher"}],"name":"Institute of Psychiatry, Psychology & Neuroscience, King\u2019s College London"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6770-2934","authenticated-orcid":false,"given":"Andrea","family":"Mechelli","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/0220mzb33","id-type":"ROR","asserted-by":"publisher"}],"name":"Institute of Psychiatry, Psychology & Neuroscience, King\u2019s College London"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"56","published-online":{"date-parts":[[2026,7,7]]},"reference":[{"key":"S0033291726105169_r31","doi-asserted-by":"publisher","DOI":"10.1017\/S2045796023000161"},{"key":"S0033291726105169_r12","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pgph.0002080"},{"key":"S0033291726105169_r21","doi-asserted-by":"publisher","DOI":"10.1016\/j.scitotenv.2017.10.260"},{"key":"S0033291726105169_r26","doi-asserted-by":"publisher","DOI":"10.1192\/j.eurpsy.2025.10110"},{"key":"S0033291726105169_r9","doi-asserted-by":"publisher","DOI":"10.1016\/j.archger.2024.105668"},{"key":"S0033291726105169_r44","doi-asserted-by":"publisher","DOI":"10.1007\/s11356-021-15371-7"},{"key":"S0033291726105169_r13","doi-asserted-by":"publisher","DOI":"10.4135\/9781036234386"},{"key":"S0033291726105169_r18","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0277286"},{"key":"S0033291726105169_r22","doi-asserted-by":"publisher","DOI":"10.1186\/s12940-025-01176-5"},{"key":"S0033291726105169_r29","doi-asserted-by":"publisher","DOI":"10.1186\/s12940-019-0543-x"},{"key":"S0033291726105169_r30","doi-asserted-by":"publisher","DOI":"10.5694\/j.1326-5377.2007.tb01466.x"},{"key":"S0033291726105169_r25","doi-asserted-by":"publisher","DOI":"10.3390\/ijerph16010087"},{"key":"S0033291726105169_r19","doi-asserted-by":"publisher","DOI":"10.1136\/bmjgh-2023-014230"},{"key":"S0033291726105169_r5","doi-asserted-by":"publisher","DOI":"10.1016\/j.scitotenv.2022.160599"},{"key":"S0033291726105169_r40","unstructured":"Royal College of Psychiatrists. 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Published by Cambridge University Press","name":"copyright","label":"Copyright","group":{"name":"copyright_and_licensing","label":"Copyright and Licensing"}},{"value":"This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http:\/\/creativecommons.org\/licenses\/by\/4.0), which permits unrestricted re-use, distribution and reproduction, provided the original article is properly cited.","name":"license","label":"License","group":{"name":"copyright_and_licensing","label":"Copyright and Licensing"}},{"value":"This content has been made available to all.","name":"free","label":"Free to read"}],"article-number":"e219"}}