Dietary insulin index and load in relation to the risk of diminished ovarian reserve: a case–control study

BackgroundDiminished ovarian reserve (DOR) occurs as a result of a decrease in the quantity and quality of oocytes, which can negatively affect fertility. Diet is one of the modifiable factors that plays an important role in preventing or exacerbating numerous diseases. As the effects of diet on the...

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Main Authors: Abed Ghavami, Sanaz Mehrabani, Mahdieh Khodarahmi, Amin Mokari-Yamchi, Mahdi Vajdi, Hatav Ghasemi-Tehrani, Gholamreza Askari
Format: Article
Language:English
Published: Frontiers Media S.A. 2025-05-01
Series:Frontiers in Nutrition
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Online Access:https://www.frontiersin.org/articles/10.3389/fnut.2025.1559229/full
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author Abed Ghavami
Sanaz Mehrabani
Mahdieh Khodarahmi
Amin Mokari-Yamchi
Mahdi Vajdi
Hatav Ghasemi-Tehrani
Gholamreza Askari
author_facet Abed Ghavami
Sanaz Mehrabani
Mahdieh Khodarahmi
Amin Mokari-Yamchi
Mahdi Vajdi
Hatav Ghasemi-Tehrani
Gholamreza Askari
author_sort Abed Ghavami
collection DOAJ
description BackgroundDiminished ovarian reserve (DOR) occurs as a result of a decrease in the quantity and quality of oocytes, which can negatively affect fertility. Diet is one of the modifiable factors that plays an important role in preventing or exacerbating numerous diseases. As the effects of diet on the risk of DOR were not well-defined, this study was designed to investigate the association between DOR and dietary insulin index (DII) and dietary insulin load (DIL).Materials and methodsA total of 370 Iranian women participated in this case–control study: 120 individuals with DOR and 250 control subjects matched for age and body mass index. A validated semiquantitative 80-item food frequency questionnaire was used to assess the DII and DIL. Serum anti-Müllerian hormone levels were measured, the number of antral follicles was counted, and various anthropometric indices were evaluated. In addition, the relationship between the DII and DIL, and the risk of DOR was analyzed using multivariable logistic regression.ResultsThe unadjusted model of analysis found no significant relationship between the risk of developing DOR, and the DII and DIL. However, the findings showed that women who were in the highest quartile of the DII had a 1.29 times higher chance of having DOR (odds ratio: 1.29; 95% confidence interval: 1.07 to 3.93) when factors such as energy consumption and physical activity were considered. Furthermore, participants in the third and fourth quartiles of the DII and DIL had significantly higher odds of developing DOR when all possible confounders were taken into account.ConclusionThe risk of DOR increased with an increase in the DII and DIL. However, further clinical trials and prospective cohort studies are needed to support this finding.
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spelling doaj-art-25f1c3bb9d6647f7af94b0ea4e04543f2025-08-20T03:47:33ZengFrontiers Media S.A.Frontiers in Nutrition2296-861X2025-05-011210.3389/fnut.2025.15592291559229Dietary insulin index and load in relation to the risk of diminished ovarian reserve: a case–control studyAbed Ghavami0Sanaz Mehrabani1Mahdieh Khodarahmi2Amin Mokari-Yamchi3Mahdi Vajdi4Hatav Ghasemi-Tehrani5Gholamreza Askari6Department of Clinical Nutrition, School of Nutrition and Food Sciences, Isfahan University of Medical Sciences, Isfahan, IranNutrition and Food Security Research Center, Isfahan University of Medical Sciences, Isfahan, IranNutrition and Food Security Research Center, Isfahan University of Medical Sciences, Isfahan, IranMaternal and Childhood Obesity Research Center, Urmia University of Medical Sciences, Urmia, IranDepartment of Community Nutrition, School of Nutrition and Food Science, Nutrition and Food Security Research Center, Isfahan University of Medical Sciences, Isfahan, IranDepartment of Obstetrics and Gynecology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, IranDepartment of Community Nutrition, School of Nutrition and Food Science, Nutrition and Food Security Research Center, Isfahan University of Medical Sciences, Isfahan, IranBackgroundDiminished ovarian reserve (DOR) occurs as a result of a decrease in the quantity and quality of oocytes, which can negatively affect fertility. Diet is one of the modifiable factors that plays an important role in preventing or exacerbating numerous diseases. As the effects of diet on the risk of DOR were not well-defined, this study was designed to investigate the association between DOR and dietary insulin index (DII) and dietary insulin load (DIL).Materials and methodsA total of 370 Iranian women participated in this case–control study: 120 individuals with DOR and 250 control subjects matched for age and body mass index. A validated semiquantitative 80-item food frequency questionnaire was used to assess the DII and DIL. Serum anti-Müllerian hormone levels were measured, the number of antral follicles was counted, and various anthropometric indices were evaluated. In addition, the relationship between the DII and DIL, and the risk of DOR was analyzed using multivariable logistic regression.ResultsThe unadjusted model of analysis found no significant relationship between the risk of developing DOR, and the DII and DIL. However, the findings showed that women who were in the highest quartile of the DII had a 1.29 times higher chance of having DOR (odds ratio: 1.29; 95% confidence interval: 1.07 to 3.93) when factors such as energy consumption and physical activity were considered. Furthermore, participants in the third and fourth quartiles of the DII and DIL had significantly higher odds of developing DOR when all possible confounders were taken into account.ConclusionThe risk of DOR increased with an increase in the DII and DIL. However, further clinical trials and prospective cohort studies are needed to support this finding.https://www.frontiersin.org/articles/10.3389/fnut.2025.1559229/fulldietary insulin indexdietary insulin loaddiminished ovarian reservefemale infertilityreproductive health
spellingShingle Abed Ghavami
Sanaz Mehrabani
Mahdieh Khodarahmi
Amin Mokari-Yamchi
Mahdi Vajdi
Hatav Ghasemi-Tehrani
Gholamreza Askari
Dietary insulin index and load in relation to the risk of diminished ovarian reserve: a case–control study
Frontiers in Nutrition
dietary insulin index
dietary insulin load
diminished ovarian reserve
female infertility
reproductive health
title Dietary insulin index and load in relation to the risk of diminished ovarian reserve: a case–control study
title_full Dietary insulin index and load in relation to the risk of diminished ovarian reserve: a case–control study
title_fullStr Dietary insulin index and load in relation to the risk of diminished ovarian reserve: a case–control study
title_full_unstemmed Dietary insulin index and load in relation to the risk of diminished ovarian reserve: a case–control study
title_short Dietary insulin index and load in relation to the risk of diminished ovarian reserve: a case–control study
title_sort dietary insulin index and load in relation to the risk of diminished ovarian reserve a case control study
topic dietary insulin index
dietary insulin load
diminished ovarian reserve
female infertility
reproductive health
url https://www.frontiersin.org/articles/10.3389/fnut.2025.1559229/full
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