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The study aimed to estimate the associations between loneliness and poor physical health, poor mental health, and health risk behaviours in middle\u2010aged and older adults in a national population survey in India.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>The sample included 72,262 middle\u2010aged and older adults from a cross\u2010sectional national community\u2010dwelling survey in India in 2017\u20132018.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Results indicate that the prevalence of moderate loneliness was 20.5%, and severe loneliness was 13.3%. In the adjusted logistic regression analysis, moderate and\/or severe loneliness was significantly positively associated with fair or poor self\u2010rated health status, and significantly negatively associated with life satisfaction and cognitive functioning. Furthermore, loneliness was associated with stroke, angina, physical injury, difficulty of Activities of Daily Living, difficulties of Instrumental Activities of Daily Living and multi\u2010morbidity. Loneliness increased the odds of major depressive disorder and insomnia symptoms. The associations between loneliness and current tobacco use and body mass index were negative and between loneliness and physical inactivity and underweight were positive.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Loneliness is associated with poor physical health, poor mental health and health risk behaviour (physical inactivity), emphasising the need to consider loneliness in various physical and mental health contexts.<\/jats:p><\/jats:sec>","DOI":"10.1002\/gps.5592","type":"journal-article","created":{"date-parts":[[2021,7,3]],"date-time":"2021-07-03T02:14:20Z","timestamp":1625278460000},"page":"1722-1731","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":52,"title":["Associations of loneliness with poor physical health, poor mental health and health risk behaviours among a nationally representative community\u2010dwelling sample of middle\u2010aged and older adults in India"],"prefix":"10.1002","volume":"36","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7714-8869","authenticated-orcid":false,"given":"Supa","family":"Pengpid","sequence":"first","affiliation":[{"name":"ASEAN Institute for Health Development Mahidol University  Nakhon Pathom Thailand"},{"name":"Department of Research Administration and Development University of Limpopo  Polokwane South Africa"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5980-0876","authenticated-orcid":false,"given":"Karl","family":"Peltzer","sequence":"additional","affiliation":[{"name":"Department of Research Administration and Development University of Limpopo  Polokwane South Africa"},{"name":"Department of Psychology College of Medical and Health Science Asia University  Taichung 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