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Associations between exploratory dietary patterns and incident type 2 diabetes: A federated meta-analysis of individual participant data from 25 cohort studies

  • Franziska Jannasch*
  • , Stefan Dietrich
  • , Tom R. P. Bishop
  • , Matthew Pearce
  • , Anouar Fanidi
  • , Gráinne O’Donoghue
  • , Donal O’Gorman
  • , Pedro Marques-Vidal
  • , Peter Vollenweider
  • , Maira Bes-Rastrollo
  • , Liisa Byberg
  • , Alicja Wolk
  • , Maryam Hashemian
  • , Reza Malekzadeh
  • , Hossein Poustchi
  • , Vivian C. Luft
  • , Sheila M. Alvim De Matos
  • , Jihye Kim
  • , Mi Kyung Kim
  • , Yeonjung Kim
  • Dalia Stern, Martin Lajous, Dianna J. Magliano, Jonathan E. Shaw, Tasnime Akbaraly, Mika Kivimaki, Gertraud Maskarinec, Loïc Le Marchand, Miguel Ángel Martínez-González, Sabita S. Soedamah-Muthu, Nicholas J. Wareham, Nita G. Forouhi, Matthias B. Schulze
*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

Purpose
In several studies, exploratory dietary patterns (DP), derived by principal component analysis, were inversely or positively associated with incident type 2 diabetes (T2D). However, findings remained study-specific, inconsistent and rarely replicated. This study aimed to investigate the associations between DPs and T2D in multiple cohorts across the world.

Methods
This federated meta-analysis of individual participant data was based on 25 prospective cohort studies from 5 continents including a total of 390,664 participants with a follow-up for T2D (3.8–25.0 years). After data harmonization across cohorts we evaluated 15 previously identified T2D-related DPs for association with incident T2D estimating pooled incidence rate ratios (IRR) and confidence intervals (CI) by Piecewise Poisson regression and random-effects meta-analysis.

Results
29,386 participants developed T2D during follow-up. Five DPs, characterized by higher intake of red meat, processed meat, French fries and refined grains, were associated with higher incidence of T2D. The strongest association was observed for a DP comprising these food groups besides others (IRRpooled per 1 SD = 1.104, 95% CI 1.059–1.151). Although heterogeneity was present (I2 = 85%), IRR exceeded 1 in 18 of the 20 meta-analyzed studies. Original DPs associated with lower T2D risk were not confirmed. Instead, a healthy DP (HDP1) was associated with higher T2D risk (IRRpooled per 1 SD = 1.057, 95% CI 1.027–1.088).

Conclusion
Our findings from various cohorts revealed positive associations for several DPs, characterized by higher intake of red meat, processed meat, French fries and refined grains, adding to the evidence-base that links DPs to higher T2D risk. However, no inverse DP–T2D associations were confirmed.
Original languageEnglish
Pages (from-to)3649-3667
JournalEuropean Journal of Nutrition
Volume61
Issue number7
DOIs
Publication statusPublished - 2022

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 3 - Good Health and Well-being
    SDG 3 Good Health and Well-being

Keywords

  • ATHEROSCLEROSIS
  • BLOOD-PRESSURE
  • CONSUMPTION
  • DESIGN
  • Dietary patterns
  • Exploratory
  • Federated meta-analysis
  • HEALTH
  • LIFE-STYLE
  • OBJECTIVES
  • POPULATION
  • PROFILE
  • RISK
  • Type 2 diabetes mellitus

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