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The aim was to examine the relationship between <jats:styled-content style=\"fixed-case\">HA<\/jats:styled-content> and the symptoms of anxiety and obsessive\u2013compulsive\u2010related disorders in a normative twin population.<\/jats:p><\/jats:sec><jats:sec><jats:title>Method<\/jats:title><jats:p>Four hundred and ninety\u2010six monozygotic adult twin pairs from the Australian Twin Registry participated in the study (age, 34.4 \u00b1 7.72 years; 59% females). Validated scales were used to assess each domain. We applied a twin regression methodology\u2014<jats:styled-content style=\"fixed-case\">ICE FALCON<\/jats:styled-content>\u2014to determine whether there was evidence consistent with \u2018causal\u2019 relationships between <jats:styled-content style=\"fixed-case\">HA<\/jats:styled-content> and other symptoms by fitting and comparing model estimates.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Estimates were consistent with higher levels of obsessing (\u2018unwanted thoughts\u2019) (<jats:italic>P<\/jats:italic> = 0.008), social anxiety (<jats:italic>P<\/jats:italic> = 0.03), and body dysmorphic symptoms (<jats:italic>P<\/jats:italic> = 0.008) causing higher levels of <jats:styled-content style=\"fixed-case\">HA<\/jats:styled-content> symptoms, and with higher levels of <jats:styled-content style=\"fixed-case\">HA<\/jats:styled-content> symptoms causing higher levels of physical\/somatic anxiety symptoms (<jats:italic>P<\/jats:italic> = 0.001).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Obsessional thoughts, body dysmorphic concerns, and social anxiety symptoms may have a causal influence on <jats:styled-content style=\"fixed-case\">HA<\/jats:styled-content>. To report physical\/somatic anxiety appears to be a consequence of the underlying presence of <jats:styled-content style=\"fixed-case\">HA<\/jats:styled-content>\u2010related fears. Should our results be confirmed by longitudinal studies, the evaluation and treatment of <jats:styled-content style=\"fixed-case\">HA<\/jats:styled-content> may benefit from the consideration of these identified risk factors.<\/jats:p><\/jats:sec>","DOI":"10.1111\/acps.12850","type":"journal-article","created":{"date-parts":[[2018,1,16]],"date-time":"2018-01-16T04:22:47Z","timestamp":1516076567000},"page":"241-251","source":"Crossref","is-referenced-by-count":12,"title":["Predictors and consequences of health anxiety symptoms: a novel twin modeling study"],"prefix":"10.1111","volume":"137","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8104-5291","authenticated-orcid":false,"given":"C.","family":"L\u00f3pez\u2010Sol\u00e0","sequence":"first","affiliation":[{"name":"Adult Mental Health Department Parc Taul\u00ed University Hospital Universitat Aut\u00f2noma de Barcelona Sabadell Spain"},{"name":"Carlos III Health Institute CIBERSAM (Centro de Investigaci\u00f3n en Red de Salud Mental) Barcelona Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"M.","family":"Bui","sequence":"additional","affiliation":[{"name":"Centre for Epidemiology and Biostatistics Melbourne School of Population Health The University of Melbourne Melbourne Vic Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J. 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