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Cognitive consequences of overweight and obesity in the ninth decade of life?
Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden ; Institute of Gerontology, School of Health Sciences, Jönköping, Sweden.ORCID-id: 0000-0002-6305-8993
Geriatric Medicine, University of Edinburgh, Royal Victoria Hospital, Edinburgh, UK ; Centre for Cognitive Ageing and Cognitive Epidemiology, Department of Psychology, University of Edinburgh, UK.
Centre for Cognitive Ageing and Cognitive Epidemiology, Department of Psychology, University of Edinburgh, UK.
Centre for Cognitive Ageing and Cognitive Epidemiology, Department of Psychology, University of Edinburgh, UK.
2015 (engelsk)Inngår i: Age and Ageing, ISSN 0002-0729, E-ISSN 1468-2834, Vol. 44, nr 1, s. 59-65Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

BACKGROUND/OBJECTIVES: the association between late-life obesity and late-life cognitive abilities is poorly understood. We studied the association between body mass index (BMI) and cognitive change in longitudinal population-based study spanning over the ninth decade of life.

SUBJECTS/METHODS: in total, 475 participants free of dementia at baseline from the Lothian Birth Cohort 1921 (mean age: 79.1 years, SD: 0.6) were included. Height and weight were assessed at baseline. BMI was calculated as kg/m(2). Cognitive abilities were assessed at age ∼11 years and at age ∼79, ∼83, ∼87 and ∼90 years.

RESULTS: latent growth models showed that men being overweight and obese had a 0.65 (SD: 0.3) and 1.10 (SD: 0.5) points less steep decline in general cognitive ability (as measured by the Moray House Test) for each year than people of normal weight. These associations were to some extent confounded by childhood intelligence. No other association between BMI and cognition was significant, either for men or women. People who were obese in old age had significantly lower childhood intelligence (m = 43.6, SD: 1.3) than people who were normal in weight (m = 47.0, SD: 0.8) and persons being overweight (m = 47.5, SD: 0.8), F (472, 3) = 3.2, P = 0.043.

CONCLUSIONS: the current study shows weak or no evidence for an association between BMI in old age and cognitive function, especially not when childhood intelligence is controlled for. Lower intelligence at the age of 11 years predicted obesity at the age of 79 years.

sted, utgiver, år, opplag, sider
Oxford University Press, 2015. Vol. 44, nr 1, s. 59-65
Emneord [en]
aged, aged 80 and over, body mass index, BMI, cognition, intelligence, longitudinal studies, older people, old age
HSV kategori
Identifikatorer
URN: urn:nbn:se:his:diva-21880DOI: 10.1093/ageing/afu108ISI: 000347413300012PubMedID: 25249169Scopus ID: 2-s2.0-84948656471OAI: oai:DiVA.org:his-21880DiVA, id: diva2:1699979
Forskningsfinansiär
Forte, Swedish Research Council for Health, Working Life and Welfare
Merknad

The work was undertaken by The University of Edinburgh Centre for Cognitive Ageing and Cognitive Epidemiology, part of the cross council Lifelong Health and Wellbeing Initiative (MR/K026992/1). Funding from the Biotechnology and Biological Sciences Research Council (BBSRC) and Medical Research Council (MRC) is gratefully acknowledged. Funding for various waves of the Lothian Birth Cohort 1921 was provided by the Biotechnology and Biological Sciences Research Council, The Royal Society, and the Scottish Government Chief Scientist Office. Analyses were supported by the Future Leaders of Aging Research in Europe (FLARE) postdoctoral grant, Swedish Council for Working Life and Social Research (currently Swedish Research Council for Health, Working Life, and Welfare) granted to the first author.

Tilgjengelig fra: 2015-10-27 Laget: 2022-09-29 Sist oppdatert: 2022-10-04bibliografisk kontrollert

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