• Preventive medicine · Feb 2024

    Individual and dual trajectories of insomnia symptoms and body mass index before and after retirement and their associations with changes in subjective cognitive functioning.

    • Antti Etholén, Anne Kouvonen, Mirja Hänninen, Jenni Kulmala, Ossi Rahkonen, Minna Mänty, and Tea Lallukka.
    • Department of Public Health, PO BOX 20 (Tukholmankatu 8 B), 00014 University of Helsinki, Finland. Electronic address: antti.etholen@helsinki.fi.
    • Prev Med. 2024 Feb 1; 179: 107830107830.

    BackgroundWe examined individual and dual trajectories of insomnia symptoms and body mass index (BMI) before and after retirement, and their associations with changes in subjective cognitive functioning after retirement.MethodsWe used the Helsinki Health Study's (n = 2360, 79% women, aged 40-60 at baseline, Finland) repeated surveys to identify the developmental patterns of insomnia symptoms and BMI (2000-2017) and changes in subjective cognitive functioning (2017-2022). We analysed the data using latent group-based dual trajectory modelling and logistic regression analysis.ResultsThree latent groups were identified for insomnia symptoms (stable low, decreasing and increasing symptoms) and BMI (stable healthy weight, stable overweight and stable obesity). Insomnia symptoms were associated with declining subjective cognitive functioning and largely explained the effects in the dual models.ConclusionThe association between dual trajectories of insomnia symptoms and BMI with subjective cognitive decline is dominated by insomnia symptoms.Copyright © 2023 The Authors. Published by Elsevier Inc. All rights reserved.

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