Abstract
Purpose
Type 2 diabetes is a global health problem. While a healthy diet lowers risk of type 2 diabetes, less is known about diets with low climate impact. This study aimed to investigate adherence to the EAT-Lancet diet and risk of type 2 diabetes in a Danish setting.
Methods
In the Danish Diet, Cancer and Health cohort, dietary data were collected using a validated 192-item food frequency questionnaire, at recruitment in 1993–1997. In total, 54,232 participants aged 50–64 years at baseline with no previous cancer or diabetes diagnoses were included in the current analyses. The EAT-Lancet diet score was used to assess adherence to the EAT-Lancet diet. Participants scored 0 (non-adherence) or 1 (adherence) point for each of the 14 dietary components of the diet score (range 0–14 points). Participants were followed through register linkage until type 2 diabetes diagnosis or censoring. Hazard ratios and 95% confidence intervals (CI) were estimated using multivariable-adjusted Cox regression models.
Results
During a median 15-year follow-up period, 7130 participants developed type 2 diabetes. The hazard ratio for developing type 2 diabetes was 0.78 (95% CI 0.71; 0.86) for those with highest EAT-Lancet diet scores (11–14 points) compared to those with lowest scores (0–7 points) after adjusting for potential confounders. After further adjusting for potential mediators, including BMI, the corresponding hazard ratio was 0.83 (95% CI 0.76; 0.92).
Conclusion
Greater adherence to the EAT-Lancet diet was associated with a lower risk of developing type 2 diabetes in a middle-aged Danish population.
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Data availability
This study was based on data from the Diet, Cancer and Health Cohort and are not publicly available due to personal information content, but can be acquired upon reasonable request from the Danish Cancer Society (dchdata@cancer.dk).
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Acknowledgements
The authors acknowledge the participants that provided data and the members of the study team that collected the data. The authors thank Lone Fredslund for assistance on data management.
Funding
The Diet, Cancer, and Health Cohort study was funded by the Danish Cancer Society. This study was funded by Aarhus University. DBI was funded by a grant from the Independent Research Fund Denmark (1057-00016B). The sponsors had no role in the design and conduct of the study; the collection, management, analysis, and interpretation of the data; or the preparation, review, or approval of the manuscript.
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The Danish Diet, Cancer and Health cohort was initiated by KO and AT as principal investigators. CCD, DBI, FL, and AO conceived the research question. CCD, FL, and DBI designed the analysis plan. FL and DBI did the data analysis. FL, DBI, and CCD drafted the manuscript. All authors interpreted the results and critically revised the article for important intellectual content and gave final approval of the version to publish. CCD takes responsibility for the contents of this article.
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The Diet, Cancer and Health Cohort was approved by relevant ethics committees and the Danish Data Protection Agency. All participants received information about the purpose and process of the study before inclusion. Participants were further informed about the voluntariness of their participation before giving written informed consent prior to inclusion in accordance with the ethical standards of the Declaration of Helsinki.
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Langmann, F., Ibsen, D.B., Tjønneland, A. et al. Adherence to the EAT-Lancet diet is associated with a lower risk of type 2 diabetes: the Danish Diet, Cancer and Health cohort. Eur J Nutr 62, 1493–1502 (2023). https://doi.org/10.1007/s00394-023-03090-3
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DOI: https://doi.org/10.1007/s00394-023-03090-3