Abstract
Purpose
Growing elderly populations worldwide have sparked interest in factors promoting healthy aging. Diet and other lifestyle patterns are key factors for healthy ageing; however, evidence is sparse for specific dietary guidelines that are easily implemented in everyday life. Whole grains constitute specific dietary components with unexplored potential in healthy ageing.
Methods
We applied an illness-death multistate model to assess the association between whole-grain intake and life expectancy, both with and without disease, over a 20-year period. Healthy ageing was defined as absence of cancer, ischemic heart disease, stroke, type 2 diabetes, asthma, chronic obstructive pulmonary disease, and dementia during follow-up.
Results
Based on information from 22,606 men and 25,468 women in the Danish Diet, Cancer and Health cohort, followed for an average of 13.8 and 17.5 years, respectively, a doubling in whole-grain intake was associated with 0.43 (95% CI: 0.33–0.52) and 0.15 (0.06–0.24) additional years without disease for men and women, respectively. Comparing the highest and lowest quartiles of whole-grain intake, with a special emphasis on men, we found that those with the highest intake lived, on average, one year longer without disease compared to those with the lowest intake. Additionally, although a high intake of whole grains yielded longer life expectancy, the duration of living with disease was shorter.
Conclusion
Intake of whole grains in mid-life was associated with healthy ageing looking 20 years ahead.
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Change history
17 April 2024
In affiliations 1 and 2 department have been moved in front of Danish Cancer Institute, adjusted the size of the figures 1, 2 and 3, figure 3 caption style updated, in table 1 “column heading” “Missing(n)” alignment and layout changes made and in tables 1 and 3, minimized the large empty spaces between columns
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Acknowledgements
Data manager, Peter Fjeldstad Hendriksen, and all participants in the Diet, Cancer and Health cohort, which was funded by the Danish Cancer Society, Denmark.
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A.O, A.T and K.O contributed to the study concept and design. M.K.G contributed to statistical methods, analysis and -support. A.K.E conducted the data analysis and drafted the manuscript. A.K.E, A.O, A.T, C.K, J.W, K.O and M.K.G critically reviewed the final draft of the manuscript.
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The study was approved by the regional ethical committees on human studies [File (KF)11–037/01] and by the Danish Data Protection Agency. All study participants gave written informed consent.
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The authors declare that they have no conflict of interest.
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Eriksen, A.K., Grand, M.K., Kyrø, C. et al. Whole-grain intake in mid-life and healthy ageing in the Danish Diet, Cancer and Health cohort. Eur J Nutr (2024). https://doi.org/10.1007/s00394-024-03357-3
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DOI: https://doi.org/10.1007/s00394-024-03357-3