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This exposure has been directly related to an increased risk of mental health problems.<\/jats:p><\/jats:sec><jats:sec><jats:title>Method<\/jats:title><jats:p>A systematic literature search of Medline, Embase, PsycINFO, PubMed and Web of Science was conducted from the date of their inception until the 1st September 2021. The study protocol was registered in PROSPERO (CRD42021240472).<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>A total of 27 studies satisfied the inclusion criteria and were used in the systematic review, representing 199,285 participants, 26,505 of whom identified as LGBT+ (mean age 16.54). Female participants (ranging from 11% to 74%) and white participants (7.7%\u201396%) made up the largest percentage of most samples. Depressive symptoms were the most commonly described psychiatric outcome (<jats:italic>n<\/jats:italic>\u00a0=\u00a017, 63%), followed by anxiety symptoms (<jats:italic>n<\/jats:italic>\u00a0=\u00a06, 31.5%). 18 studies provided meta\u2010analysable data, compromising 21,781 LGBT+ young people. LGBT+ youth reported a higher prevalence of adverse experiences in comparison to their heterosexual or cisgender counterparts (<jats:italic>p<\/jats:italic>\u00a0&lt;\u00a0.001), with sexual abuse representing the most commonly reported experience (29.7%), followed by verbal abuse (28.7%), physical abuse (26.5%) and cyberbullying (19.1%). LGBT+ youth were also at a heightened risk of mental health disorders (<jats:italic>p<\/jats:italic>\u00a0&lt;\u00a0.001), with 36.9% and 31.5% of sample meeting the clinical criteria for depression and anxiety, respectively.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Continued advocacy is needed from communities and Allies to support and empower LGBT+ youth in the face of adversity. Longitudinal and longer\u2010term studies are required to further understand the relationship between adverse experiences in LGBT+ youth and the impact on mental health.<\/jats:p><\/jats:sec>","DOI":"10.1002\/jcv2.12079","type":"journal-article","created":{"date-parts":[[2022,5,10]],"date-time":"2022-05-10T05:04:53Z","timestamp":1652159093000},"source":"Crossref","is-referenced-by-count":61,"title":["A systematic review and meta\u2010analysis investigating the\u00a0impact of childhood adversities on the mental health of LGBT+\u00a0youth"],"prefix":"10.1002","volume":"2","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2606-737X","authenticated-orcid":false,"given":"Lucy","family":"Jonas","sequence":"first","affiliation":[{"name":"Institute of Psychiatry Psychology and Neuroscience King's College London  London UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gonzalo","family":"Salazar de Pablo","sequence":"additional","affiliation":[{"name":"Institute of Psychiatry Psychology and Neuroscience King's College London  London UK"},{"name":"South London &amp; Maudsley NHS Trust  London UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mamie","family":"Shum","sequence":"additional","affiliation":[{"name":"South London &amp; Maudsley NHS Trust  London UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6305-9710","authenticated-orcid":false,"given":"Chiara","family":"Nosarti","sequence":"additional","affiliation":[{"name":"Institute of Psychiatry Psychology and Neuroscience King's College London  London UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chris","family":"Abbott","sequence":"additional","affiliation":[{"name":"South London &amp; Maudsley NHS Trust  London UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Julio","family":"Vaquerizo\u2010Serrano","sequence":"additional","affiliation":[{"name":"Institute of Psychiatry, Psychology and Neuroscience King's College London West London NHS Trust  London UK"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2022,5,10]]},"reference":[{"key":"e_1_2_12_2_1","doi-asserted-by":"publisher","DOI":"10.1017\/s0033291720002421"},{"key":"e_1_2_12_3_1","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0054691"},{"key":"e_1_2_12_4_1","doi-asserted-by":"publisher","DOI":"10.1080\/19361653.2019.1614131"},{"key":"e_1_2_12_5_1","doi-asserted-by":"publisher","DOI":"10.2105\/AJPH.2012.301150"},{"key":"e_1_2_12_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.adolescence.2018.03.015"},{"key":"e_1_2_12_7_1","doi-asserted-by":"publisher","DOI":"10.1027\/0227-5910\/a000718"},{"key":"e_1_2_12_8_1","doi-asserted-by":"publisher","DOI":"10.1177\/1948550619887785"},{"key":"e_1_2_12_9_1","doi-asserted-by":"publisher","DOI":"10.1007\/s10964\u2010008\u20109389\u20101"},{"key":"e_1_2_12_10_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00127\u2010014\u20100955\u20104"},{"key":"e_1_2_12_11_1","author":"Borenstein M.","year":"2006","journal-title":"Comprehensive Meta\u2010analysis (Version 2.2.027) [Computer software]. 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