Circadian and temporal eating patterns in relation to metabolic syndrome in Iranian women

Abstract Late energy intake (EI) is linked to increased obesity; however, the relationship between circadian eating patterns—including timing (morning vs. evening) energy and macronutrients, eating frequency, and eating window duration—and metabolic syndrome (MetS) in Iranian women remains insuffici...

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Main Authors: Azadeh Lesani, Mansooreh Sadat Mojani-Qomi
Format: Article
Language:English
Published: Nature Portfolio 2025-07-01
Series:Scientific Reports
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Online Access:https://doi.org/10.1038/s41598-025-09427-8
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author Azadeh Lesani
Mansooreh Sadat Mojani-Qomi
author_facet Azadeh Lesani
Mansooreh Sadat Mojani-Qomi
author_sort Azadeh Lesani
collection DOAJ
description Abstract Late energy intake (EI) is linked to increased obesity; however, the relationship between circadian eating patterns—including timing (morning vs. evening) energy and macronutrients, eating frequency, and eating window duration—and metabolic syndrome (MetS) in Iranian women remains insufficiently elucidated, particularly across age groups, menopausal statuses, and diurnal preference. In this cross-sectional study, dietary intake of 574 women aged 20 to 60 years from Tehran was assessed using three 24-hour dietary recalls. diurnal preference was evaluated through the Morningness-Eveningness Questionnaire. The analysis focused on eveningness in EI and macronutrient intake (%evening - %morning), eating occasions (EOs), and eating window duration. Anthropometric measurements, blood pressure, glucose, and lipid levels, were recorded. Generalized linear regression was utilized. Eveningness of EI was related to increased MetS risk T (tertile) 3 vs.T1 (ORs (95% CIs); 0.35 (0.11–0.62), p = 0.03). Also, the number of EOs T3 vs.T1 ( -0.68 (-1.32 – -0.23), p = 0.02) was related to decreased MetS. Eveningness of EI was linked to risk of elevated fasting blood glucose, T3 vs. T1 (0.46 (0.09–0.91), p = 0.02), Additionally, T3 vs. T1 in the Eveningness of protein showed a significant decrease in TG, (-0.56 (-1.01 - -0.12); p = 0.01). No associations were found in stratified by age, menopausal status, and chronotype. Consuming fewer meals along with a higher evening energy—might from non-protein sources—might be associated with increased the risk of MetS cross-sectionally, emphasizing the need for longitudinal studies to deepen our understanding of these relationships.
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spelling doaj-art-638da2f0dea846eab2deabd05f4396fc2025-08-20T04:01:36ZengNature PortfolioScientific Reports2045-23222025-07-0115111410.1038/s41598-025-09427-8Circadian and temporal eating patterns in relation to metabolic syndrome in Iranian womenAzadeh Lesani0Mansooreh Sadat Mojani-Qomi1Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS)Department of Food Science and Technology TeMS.C, Islamic Azad UniversityAbstract Late energy intake (EI) is linked to increased obesity; however, the relationship between circadian eating patterns—including timing (morning vs. evening) energy and macronutrients, eating frequency, and eating window duration—and metabolic syndrome (MetS) in Iranian women remains insufficiently elucidated, particularly across age groups, menopausal statuses, and diurnal preference. In this cross-sectional study, dietary intake of 574 women aged 20 to 60 years from Tehran was assessed using three 24-hour dietary recalls. diurnal preference was evaluated through the Morningness-Eveningness Questionnaire. The analysis focused on eveningness in EI and macronutrient intake (%evening - %morning), eating occasions (EOs), and eating window duration. Anthropometric measurements, blood pressure, glucose, and lipid levels, were recorded. Generalized linear regression was utilized. Eveningness of EI was related to increased MetS risk T (tertile) 3 vs.T1 (ORs (95% CIs); 0.35 (0.11–0.62), p = 0.03). Also, the number of EOs T3 vs.T1 ( -0.68 (-1.32 – -0.23), p = 0.02) was related to decreased MetS. Eveningness of EI was linked to risk of elevated fasting blood glucose, T3 vs. T1 (0.46 (0.09–0.91), p = 0.02), Additionally, T3 vs. T1 in the Eveningness of protein showed a significant decrease in TG, (-0.56 (-1.01 - -0.12); p = 0.01). No associations were found in stratified by age, menopausal status, and chronotype. Consuming fewer meals along with a higher evening energy—might from non-protein sources—might be associated with increased the risk of MetS cross-sectionally, emphasizing the need for longitudinal studies to deepen our understanding of these relationships.https://doi.org/10.1038/s41598-025-09427-8EveningnessMeal timingEating windowDiurnal rhythmsMetabolic syndromeChronotype
spellingShingle Azadeh Lesani
Mansooreh Sadat Mojani-Qomi
Circadian and temporal eating patterns in relation to metabolic syndrome in Iranian women
Scientific Reports
Eveningness
Meal timing
Eating window
Diurnal rhythms
Metabolic syndrome
Chronotype
title Circadian and temporal eating patterns in relation to metabolic syndrome in Iranian women
title_full Circadian and temporal eating patterns in relation to metabolic syndrome in Iranian women
title_fullStr Circadian and temporal eating patterns in relation to metabolic syndrome in Iranian women
title_full_unstemmed Circadian and temporal eating patterns in relation to metabolic syndrome in Iranian women
title_short Circadian and temporal eating patterns in relation to metabolic syndrome in Iranian women
title_sort circadian and temporal eating patterns in relation to metabolic syndrome in iranian women
topic Eveningness
Meal timing
Eating window
Diurnal rhythms
Metabolic syndrome
Chronotype
url https://doi.org/10.1038/s41598-025-09427-8
work_keys_str_mv AT azadehlesani circadianandtemporaleatingpatternsinrelationtometabolicsyndromeiniranianwomen
AT mansoorehsadatmojaniqomi circadianandtemporaleatingpatternsinrelationtometabolicsyndromeiniranianwomen