The healthy Nordic diet and Mediterranean diet and incidence of disability 10 years later in home-dwelling old adults
Perälä, Mia-Maria; von Bonsdorff, Mikaela B.; Männistö, Satu; Salonen, Minna K.; Simonen, Mika; Pohjolainen, Pertti; Kajantie, Eero; Rantanen, Taina; Eriksson, Johan G. (2018-10-23)
Mia-Maria Perälä, Mikaela B. von Bonsdorff, Satu Männistö, Minna K. Salonen, Mika Simonen, Pertti Pohjolainen, Eero Kajantie, Taina Rantanen, Johan G. Eriksson, The Healthy Nordic Diet and Mediterranean Diet and Incidence of Disability 10 Years Later in Home-Dwelling Old Adults, Journal of the American Medical Directors Association, Volume 20, Issue 5, 2019, Pages 511-516.e1, ISSN 1525-8610, https://doi.org/10.1016/j.jamda.2018.09.001
© 2018 AMDA - The Society for Post-Acute and Long-Term Care Medicine.This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/.
Background/Objective: Diet has a major impact on a person’s health. However, limited information exists on the long-term role of the whole diet on disability. We investigated the association of the healthy Nordic diet and the Mediterranean diet with incident disability 10 years later.
Design: Longitudinal, with a follow-up of 10 years.
Settings/Participants: A total of 962 home-dwelling men and women from the Helsinki Birth Cohort Study, mean age 61.6 years, who were free of disability at baseline.
Measurements: At baseline, 2001–2004, the Nordic diet score (NDS) and modified Mediterranean diet score (mMDS) were calculated using a validated 128-item food-frequency questionnaire. Higher scores indicated better adherence to the diet. Participants’ incident disability was assessed during 2011–2013 by a self-reported questionnaire and was based on mobility limitations and difficulties to perform self-care activities. Analyses were performed using logistic regression and adjusted for potential confounding factors.
Results: In total, 94 participants (9.8%) developed mobility limitations and 45 participants (4.7%) developed difficulties in self-care activities during 10 year follow-up. The likelihood of having mobility limitations (odds ratio (OR) 0.42, 95% confidence interval (CI) 0.22–0.80) and difficulties in self-care activities (OR 0.38, 95% CI 0.15–0.94) were lower among those in the highest NDS tertile than among those in the lowest NDS tertile. Greater mMDS was associated with a lower disability incidence; however, the association was not statistically significant.
Conclusions/Implications: Adherence to the healthy Nordic diet predicts 10-year incidence of mobility limitations and difficulties to perform self-care activities in old age and may thus be protective against disability in Nordic population.
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