Mediterranean diet and obesity polygenic risk interaction on adiposity in European children: the IDEFICS/I.Family Study

Date

2025-05-19

Authors

Seral-Cortes, Miguel
Drouard, Gabin
Masip, Guiomar
Bogl, Leonie H.
Henauw, Stefaan de
Foraita, Ronja
Intemann, Timm
Lissner, Lauren
Molnar, Dénes
Nagrani, Rajini

Director

Publisher

Wiley
Acceso abierto / Sarbide irekia
Artículo / Artikulua
Versión publicada / Argitaratu den bertsioa

Project identifier

  • European Commission/FP7/266044/
Impacto
OpenAlexGoogle Scholar
cited by count

Abstract

Background and objectives: to examine whether changes in the Mediterranean Diet (MD) or any of its MD food groups modulate the genetic susceptibility to obesity in European youth, both in cross-sectional and longitudinal analyses. Methods: for cross-sectional analysis, 1982 participants at baseline, 1649 in follow-up 1 (FU1) and 1907 in follow-up 2 (FU2), aged 2–16 years of the IDEFICS/I.Family studies were considered. For the longitudinal design, 1254 participants were included. Adherence to MD was assessed using the Mediterranean Diet Score (MDS), and genetic susceptibility to high BMI was assessed with a polygenic risk score (BMI-PRS). Multiple linear regression models were fitted to estimate gene × MD effects on markers of obesity. Results: in cross-sectional analyses, at baseline, higher MDS was associated with higher BMI in children with high genetic susceptibility (β = 0.12; 95% CI = [0.01, 0.24]). However, 6 years later, at FU2, higher MDS was associated with lower BMI (β = −0.19; 95% CI = [−0.38, −0.01]) in children with high genetic susceptibility, showing an attenuating MDS effect. Also in FU2, vegetables and legumes (V&L) showed inverse associations with BMI (β = −0.01; CI = [−0.02, −0.00]) and WC (β = −0.02; CI = [−0.03, −0.00]) regardless of the obesity genetic risk, although the effect sizes were small. In the longitudinal analyses, no MDS-obesity associations or gene × diet interaction effects were observed. Conclusions: in cross-sectional analysis (baseline and FU2), the MD modulated the association between obesity susceptibility and adiposity indicators in European youth, having an exacerbating effect in children measured during infancy years and an attenuating effect in early adolescent years.

Description

Keywords

BMI, Children, Gene × diet, Mediterranean diet, Polygenic risk score

Department

Ciencias de la Salud / Osasun Zientziak

Faculty/School

Degree

Doctorate program

item.page.cita

Seral-Cortes, M., Drouard, G., Masip, G., Bogl, L. H., Henauw, S. de, Foraita, R., Intemann, T., Lissner, L., Molnar, D., Nagrani, R., Pala, V., Picó, C., Russo, P., Tognon, G., Tornaritis, M., Veidebaum, T., Wright, M. N., Miguel-Etayo, P. de, Moreno, L. A., Labayen, I. (2025) Mediterranean diet and obesity polygenic risk interaction on adiposity in European children: the IDEFICS/I.Family Study. Pediatric Obesity, 1-13.

item.page.rights

© 2025 The Author(s). Pediatric Obesity published by John Wiley & Sons Ltd on behalf of World Obesity Federation. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in anymedium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

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