Une \u00e9quipe de recherche associant l\u2019INRAE, l\u2019Inserm, l\u2019universit\u00e9 Sorbonne Paris Nord, l\u2019universit\u00e9 Paris Cit\u00e9 et le Cnam a publi\u00e9 dans la revue Communications Medicine une premi\u00e8re \u00e9tude sur le lien entre \u00ab jetlag alimentaire \u00bb et risque de maladies cardiovasculaires. Le jetlag alimentaire est d\u00e9fini comme le d\u00e9calage entre les horaires des prises alimentaires en semaine, souvent d\u00e9termin\u00e9s par les contraintes professionnelles, et ceux du week-end ou des jours de repos, plus proches du rythme biologique interne.<\/p>\n
L\u2019\u00e9tude s\u2019appuie sur les donn\u00e9es de 104 806 adultes de la cohorte fran\u00e7aise NutriNet-Sant\u00e9, suivis entre 2009 et 2023. L\u2019intensit\u00e9 du jetlag alimentaire a \u00e9t\u00e9 calcul\u00e9e \u00e0 partir des horaires de la premi\u00e8re et de la derni\u00e8re prise alimentaire en semaine et le week-end. Les maladies cardiovasculaires, dont les maladies coronariennes, ont \u00e9t\u00e9 auto-d\u00e9clar\u00e9es puis valid\u00e9es par les dossiers m\u00e9dicaux. Les analyses statistiques ont pris en compte de nombreux facteurs potentiellement confondants (\u00e2ge, situation familiale, cat\u00e9gorie socio-professionnelle, consommation de tabac et d\u2019alcool, niveau d\u2019activit\u00e9 physique, qualit\u00e9 de l\u2019alimentation, dur\u00e9e du sommeil, etc.).<\/p>\n
Les r\u00e9sultats sugg\u00e8rent que, chez les hommes, chaque heure suppl\u00e9mentaire de jetlag alimentaire est associ\u00e9e \u00e0 une augmentation de 14 % du risque de d\u00e9velopper une maladie cardiovasculaire et de 21 % du risque de d\u00e9velopper une maladie coronarienne. Aucune association significative n\u2019a \u00e9t\u00e9 observ\u00e9e chez les femmes. Les auteurs rappellent que le d\u00e9calage des horaires de repas peut perturber les horloges biologiques et s\u2019inscrit dans la continuit\u00e9 de travaux ant\u00e9rieurs montrant des effets cardiovasculaires de perturbations chronobiologiques li\u00e9es notamment au travail de nuit ou \u00e0 des repas pris tardivement.<\/p>\n
Cette \u00e9tude met en \u00e9vidence un possible r\u00f4le des variations d\u2019horaires de prise alimentaire entre la semaine et le week-end dans la survenue de maladies cardiovasculaires, en particulier chez les hommes, tout en soulignant que les r\u00e9sultats sont issus d\u2019analyses observationnelles avec ajustement statistique et ne constituent pas une preuve de causalit\u00e9. Elle est susceptible d\u2019alimenter la r\u00e9flexion sur les d\u00e9terminants organisationnels et temporels de l\u2019alimentation li\u00e9s aux contraintes de travail et leurs impacts potentiels sur la sant\u00e9 cardiovasculaire.\u00a0(contenu r\u00e9sum\u00e9 par l’IA)\u200bLire la Suite<\/a>\u200b<\/p>","protected":false},"excerpt":{"rendered":" Une \u00e9quipe de recherche associant l\u2019INRAE, l\u2019Inserm, l\u2019universit\u00e9 Sorbonne Paris Nord, l\u2019universit\u00e9 Paris Cit\u00e9 et le Cnam a publi\u00e9 dans la revue Communications Medicine une premi\u00e8re \u00e9tude sur le lien 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